Improvements in Engraving Machines.
Year: 1898

page_text: Date of Application, 30th Sept., 1898
Complete Specification Left, 30th June, 1899-Accepted, 30th Sept., 1899
PROVISIONAL SPECIFICATION.
Improvements in Engraving Machines.
We, WILLIAM HENRY LOCK, Manager and Secretary of. The Linotype Company.
Limited, of No. 188, Fleet Street, in the City of London, JOHN PLACE and
CHARLES WALTER PASHLEY, both of The Linotype Works, Broadheath, in the
County of Chester, Engineers, do hereby declare the nature of this invention
to be as follows: -
The present invention relates to improvements in engraving machines and
more particularly in the engraving machine described in the Specification of
Letters Patent 11938 of 1895.
The first part of it consists in a device for taking up wear at the fulcrum
pin of the lever. Instead of that pin being parallel as heretofore, the head of
it is tapered; and a bush tapered in the opposite direction, is made fast to the
pin, in such a position that each taper fits in the end of the respective lever.
Both ends are preferably bushed so as to provide hard bearing surfaces for the
said tapered head and bush. The pin is screwed through a collar which is
screwed in the fulcrum bracket and projects beyond it on both sides. The outer
end of the pin carries a locking nut which bears upon the adjacent face of the
collar. Tightening the nut takes up wear at the fulcrum.
The second part of it consists of a device for taking up wear at the middle
joints of the levers. Heretofore the pin of a joint has been parallel, fitting in
a parallel and unadjustable hole. It is now fitted with a bush tapered externally
and split lengthwise. This tapered bush fits in a second tapered and split bush
or block which is adapted by means of a suitable slot device to slide along the
lever and to be held thereto in any desired position by a flange on one side of
the lever and a screw threaded nut working on the said bush on the other side.
The outer end of the first mentioned bush projects beyond the second bush and
is there screw threaded and fitted with a nut which is capable of taking up
wear in the joint, by bearing upon the outer end of the internally tapered bush
above mentioned.
The third part of the invention consists in a take up device for the lever
end joint. The latter has two motions in it, one circular and the other sliding
to allow for the lever lengthening. The lever is slotted as heretofore, both
sides of the slot being V shaped in cross section, the edges of the V standing
out across the slot, and the block being in two pieces, one on each side, and
bevelled to fit the respective sides of the two V's. The pieces are held in working
fit with the latter by set screws which also serve to hold them together as
one block. The inner faces of the said pieces are parallel with their outer faces.
The head of the pin is tapered where it fits in the link. It is held to the latter
by a headed set screw screwed axially into it from the opposite side of the link
to that on which the lever is, and so pulling the head into its tapered seating.
Between the shank of the pin and the block, there is a bush split lengthwise
and tapered opposite to the pin head and parallel with the bevels of the block
piece next to the link. Between the other block piece and the taper of the bush

page_text: there is a doubly tapered ring fitting up to the bush taper on one side and
to the inner bevel of the said block piece on the other side. This ring is slotted
and grooved to close on the bush. The bush projects beyond the ring, where
it is parallel and screw. threaded to receive a locking nut adapted to take up
wear by bearing on the adjacent and projecting face of the ring.
The fourth part of the invention consists in a device for taking up wear in
the bearings of the reciprocating links. Each link slides through a frame and
bears against antifriction rollers therein, one on each side of it, and both turning
on moveable pivots which slide in a slot in the frame transversly to the motion
of the link. Each pivot has a slot parallel with the motion of the link and
tapered on one side, in which fits a correspondingly tapered adjusting pin. The
two pins are connected together by a yoke in order that they can be moved
together along the slots. The yoke is under the control of an adjustable set
screw, so that the fapers of the pins can move the rollers up to the link.
The fifth part of the invention consists in a device for taking up wear in the
ball race of a link. The path of the ball is formed by two coned races cut in two
parallel bars held to the link. Outside each bar, stands a pair of bars constituting
a double wedge. One bar of each pair is under the control of a yoke bearing
upon or connected with the outer ends thereof and a set screw adapted to move
the yoke up to the link so as to actuate the wedges..
The sixth part of the invention consists in an improved ball bearing for the
reciprocating blocks. There are three races to each block, so that the latter has
three bearings. A race is cross-shaped in plan, and has four balls above it and
four below. The outside piece of the race is a bush tapered externally and
fitting in an internally and oppositely tapered bush fast to the respective base.
The externally tapered bush projects beyond the small end of the internally
tapered bush, where it is screw threaded and receives a nut which bears against
the said end. Tightening that nut closes the inner bush upon the balls and at
the same time maintains the centre of the bearing. Stops are provided at the
outer ends of each groove of the race to prevent the balls escaping.
The seventh part of the invention relates to improvements in the drive of the
cutter spindles of the above mentioned machine, being the part in which the
spindles of the cutters revolve; and consists in an independent drive for them.
Each spindle end projects above a transverse bar known as the bridge and
carries a disc instead of a driving pulley. A second bridge is mounted to slide
up and down a pair of pillars. Such sliding motion is under the control of a
rack and pinion gear distributed between the bridge and the pillars. The
driving pulley for each spindle is above the second bridge and turns in a
suitable bearing therein. The pulley axis is continued downwards through the
said bridge and carries pins parallel with it and capable of engaging with or of
being disengaged from the dise above mentioned, notched or bored to receive
them, according to the position of the bridge.
.
The eighth part of the invention consists in an improved chuck to hold the
series of matrix blanks to be cut, the improvement having, special reference to
the automatic adjustment of the chuck for irregular thicknesses of the blanks.
A matrix blank is set in the chuck partly by the side edge in which is the
formative cavity in which the letter is cast, and partly by the bottom shoulder
or lug next to that side edge. For a full description of a matrix, reference may
be made to the Specification of Letters Patent 14583 of 1890. Each matrix blank
of the series is treated in the same way, so that a description of the chuck in
respect of one matrix will be a description of it in its entirety.
The chuck consists of two principal parts, the base and the detachable top plate
or blank carrier. The base has a standard at each end, and the tops of the two
standards receive the ends of the carrier, and which are held in their seats by
set screws or their equivalent, the base and carrier then being parallel with each
other. A blank is held under the carrier and transversely of it, by a spring
bearing against its foot and pressing that up to the rear edge of the carrier, a

page_text: slider acting against one side and a bar latch on the other. There is a spring
catch to hold the latter up to the blank. The latch is capable of sliding either
to the right or to the left upon a rod carried in front of the carrier and parallel
with it, against spiral springs. When the carrier is fixed upon the base, the
slider and the bar latch stand between a pair of parallel vice jaws capable of
motion to and from each other. Both jaws are actuated by a frame having two
opposite tapers symmetrical with the faces of the vice jaws and which tapers
engage the respective jaws by means of tenons and dovetails or the like. Both
vice jaws and the frame are transverse of the chuck. There is a rack on the
frame and a pinion gearing with it, so that the rotation of the pinion opens or
shuts the více jaws.
All the pinions are mounted loose on one shaft, and there is combined with
each the following self-disconnecting device to prevent the motion of the shaft
reaching any pinion after the respective vice has been closed. A pinion has a
clutch fast to it. The corresponding half of the clutch is held to the shaft by a
feather and slot device and up to the other part of the clutch by a spiral spring.
The engaging faces of the clutch are inclined at 'a proper angle for passing power
enough to close the vice jaws upon the slider and latch and for slipping if more
power is sent on to the feathered part, as would be the case until all the vices
had been closed.
Dated the 90th
Cantambo 1908
CHAS. S. WOODROFFE,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements.in Engraving Machines.
We, WILLIAM HENRY LOCK, Manager and Secretary of The Linotype Company
Limited, of 188, Fleet Street, in the City of London, and JOHN PLACE and
CHARLES WALTER PASHLEY, both of The Linotype Works, Broadheath, in the
County of Chester, Engineers, do hereby declare the nature of this invention
and in what manner the same is to be performed; to be particularly described and
ascertained in and by the following statement:—
The present invention relates to improvements in engraving machines and
more particularly in the engraving machine described in the Specification of
Letters Patent 11938 of 1895.
Referring to the accompanying drawings which are to be taken as part of
this specification and read therewith,
Figure 1 is a side elevation from the right hand of the engraving machine
above mentioned:
Figure 2, a plan taken along the line 2-2 of Figure 1:
Figure 3, a plan illustrating the sixth part of the invention:
Figure 4,' an elevation of Figure 4 looking at it in the direction of the arrow:
Figure 5, a detail plan of the first part of the invention:
Figure 6, a sectional plan on the line 6-6 of Figure 5 including part of the
bracket that supports the fulcrum pin: .
Figure 7, a transverse vertical section on the line 7-7 of Figure 0:
Figure S, a plan of the split bush of the fulcrum pin:
Figure 9, a vertical section on the line 9-9 of Figure 8:
Figure 10, a plan of the tapered internal bush of the fulcrum pin:
Figure 11, a vertical section on the line 11-11 of Figure 10.
Figure 12, a plan of 'a lever bush:

page_text: Figure 13, a vertical section on the line 13-13 of Figure 12:
Figure 14, a plan of the second part of the invention:
Figure 15, a vertical section on the line 15-15 of Figure 14:
Figure 16, a transverse vertical section on the line 16-16 of Figures 14
and 15:
Figure 17, a plan of the tee block:
Figure. 18, a plan: Figure 19, a front elevation; and Figure 20 an end elevation
of the sliding block:
Figure 21, an elevation, and Figure 22, a plan of the split bush:
Figure 23, a plan of the third part of the invention:
Figure 24, a vertical section on line 24-24 of Figure 23::
Figure 25, a transverse vertical section on line 25-25 of Figure 23:
Figure 26, a plan; and Figure 27, an elevation of the outer split bush:
Figure 28, a plan and Figure 29, a vertical section on the line 29-29 of
Figure 28, of the inner split bush.:
Figure 30, a plan of the top sliding plate:<
Figure 31, a side elevation and Figure 32, an end elevation, of the top and
bottom sliding plates:
Figure 33, an elevation and Figure 34, a plan, of the coned end of the pivot
pin of a joint:
Figure 35, a plan after removal of the top plate, of the fourth part of the
invention:
Figure 36, a sectional plan on the line 36-36 of Figure 37:
Figure 37, a vertical section on the line 37-37 of Figure 35:
Figure 38, a front elevation partly in section:
Figure 39, a vertical section on the line 39-39 of Figures 35 and 36:
Figure 40, a plan of the fifth part of the invention:
Figure 41, an elevation from the left side of Figure 40:
Figure 42, a vertical section on line 42-42 of Figure 40:
Figure 43, a vertical section on line 43-43 of Figure 40:
Figure 44, a vertical section illustrating the improved ball bearing of the
sixth part of the invention, taken on line 44-44 of Figure 4:
Figure 45, a transverse section on the line 45-45 of Figure 44 after the
removal of the ball stops:
Figures 46 and 47, respectively plan and end elevation corresponding therewith,
of a ball race bar:
Figure 48, a vertical section of the tapered bush, on the line 48-48 of
Figures 49 and 50:
Figures 49 and 50, end elevations of the right and left hand ends, respectively,
of Figure 48:
Figure 51, a side elevation of the tapered bush shewn in Figures 48 to 50:
Figure 52, an end elevation of the left hand end of Figure 51:
Figure 53, an elevation of the screw that holds the tapered bush to the
bracket:
Figures 54 and 55, respectively, plan and side elevation of the ball stops:
Figure 56, a front elevation partly in section:
Figure 57, a plan corresponding with Figure 56 but having a portion of the
bottom bridge piece broken away:
Figure 58, an end elevation of Figure 56 from the. right:
Figures 59 and 60, respectively a horizontal section taken on the line 4-4 of
Figure 56, and a plan of the disc upon the top of a quill:
Figure 61, a detail front elevation on an enlarged scale, of a device for putting
one quill of a series out of gear:
Figure 62, a detail side elevation of a modified device for moving the top bridge
up or down; and
Figure 63, a horizontal section taken on, the line 8-8 of Figure 62, looking
at the latter from the right hand:
5

page_text: Figure 64 is a plan of a bush of one of the spindles that drive the quills:
Figure 65 is a front elevation of the improved chuck and the vice which
holds it:
Figure 66, a plan corresponding with Figure 65:
Figure 67, an end elevation from the right hand of Figures 65 and 66:
Figure 68, an end elevation from the left hand of Figures 65 and 66:
Figure 69 a longitudinal vertical section taken on the line 5-5 of Figure 70:
Figure 70, a plan corresponding with Figure 69:
Figure 71, a transverse vertical section taken on line 7-7 of Figures 69
and 70:
Figure 72, a detail plan of part of the top of the vice body:
Figures 73 and 74, detail section on lines 9-9 and 10-10 respectively of
Figure 72:
Figure 75, a front elevation after certain parts have been broken away, of the
chuck
Figure 76, a plan corresponding with Figure. 75:
Figure 77, a transverse vertical section on line 13-13 of Figures 75. and 76;
and
Figure 78, a transverse vertical section on line 14-14 of Figures 75 and. 76.
A is the bed plate of the machine; B, the standard upon which is fixed the
stationary plate B' in which reciprocate the frame. I and block. E¹. V is the
vice fast on the top of the reciprocating. top block E¹. I is the standard that
carries the tool holders i. C is a fixed standard carrying a bracket C vertically.
adjustable thereon and from which hangs the tracer rod D by a ball joint c..
L is the pattern and L₁ the pattern holder. K; K' are two links connected to
the tracer rod D and having their outer ends respectively joined to the outer
ends of a pair of levers G, G¹, fulcrummed upon a bracket H¹ secured by lugs b¹
on the standard B. Each lever G, G¹, is connected to the reciprocating top
block E¹ by a pivot pin P¹ as described in greater detail further on.
There are
several parts of the above machine included in Figures 1 and 2 which are not
affected by the present invention and which need not, therefore, be described in
this specification. Full details of their construction and operation will be found
in the specification above mentioned.
The first part of the invention consists in an improved device for taking up.
wear at the fulcrum pin H of the two levers G, G₁ between it and them. It is
illustrated in Figures 5, 6 and 8 to 13. Instead of that pin H being parallel
throughout its length as heretofore, it has a head the diameter of which
gradually increases from its junction with the shank h¹, as clearly shewn in
Figure 6. 2 is a bush tapered externally in the opposite direction to the head h
and fitting on the shank h¹³ is a slot in the internal face of the bush hand
parallel with its axis. is a pin projecting from the shank h¹ into the slot ha
to prevent the bush 2 turning about the said shank and to allow them both, to
move parallel with their common axis in either direction. h is a bush in the
end of the lever G¹ to receive the above described bush 2, and 6 is a similar
bush in the end of the lever G to receive the head h, both bushes being held
fast to their respective lever ends. is a split bush screwed into the bracket H¹.
18 is a screw threaded nut on the screw threaded end of the shank h. When
the bushes 2, h5, h6 and the pin head are new, the latter and the bush h²
are at some distance apart, as shewn in Figure 6, that distance being equal to the.
maximum take-up that will be possible. The split bush h7 is screwed down
through the bracket H to push the bush 2 into the bush h far enough to take
the wear in respect of the lever G¹, and the nut 8 is screwed down the shank h¹
after the bush h to pull the tapered head h¹ into the correspond-
ingly tapered bush to take up the wear in respect of the lever G.
It is preferred that the bushes, 6, should respectively project beyond both
sides of the respective levers G, G¹, as shewn in Figure 6 in order that both
up

page_text: the pin head h¹ and the bush h² may always have bearings as deep as the respective
levers G, G1, are thick.
The second part of the invention consists in an improved device for taking up
wear at the middle or pivot joint P¹ of either of the,levers G, G¹. It is illustrated
in Figures 5 to 7 as applied to lever G and in Figures 14 to 22 as applied to
lever G. A comparison of these two groups of figures will shew that in the
case of the top lever G¹, the pivot joint must be longer to reach down to the
reciprocating table E, than in the case of the bottom lever G, because the former
is, at a greater distance from the said table E¹ than the latter. P is the block
that slides between the guides 0, 0¹. P¹ is the pivot pin fast to it. R¹ is a
block having shoulders r, r, to bear on the bottom side of the lever. G or G¹.
It is continued up through the slot Q or Q¹ in the said respective lever. and
stands up above the latter to receive a plate 3 which rests upon the top side of.
the said lever.. r, rare clamping screws by which the block R¹ and the plate. 3.
are held to the respective lever as heretofore. The device for taking up wear
consists of a split and tapered bush 3 embracing the pin P₁ and fitting in a
correspondingly tapered bore ³ in the block R¹ above the top of which it stands
as shewn in Figures 6, 7, 15 and 16, where it is screw-threaded to receive a nut 5
which bears upon the said top r. The bush 2 is split to grip the pin P¹ tight.
Screwing the said nut 5 down the screw-threaded end of the split and tapered
bush, pulls the latter up farther through the block R¹ and takes up all wear
between the said bush and block.
The third part of the invention consists in an improved device for taking up
wear in the joined ends of the levers G, G¹, above mentioned and the respective
links K, K. It is illustrated in Figures 23 to 34 and the details of it will be
described in connection with the lever G and the link K, the joint between the
lever G and the link K¹ being a replica of that between the lever G and the
link K. Such a joint has two motions, a circular one between the link and
lever ends and the pivot pin and a sliding one in the lever end. a³ is a slot
in, the end of the lever G. Each side of the said slot has a V-shaped ridge a¹
along it, the two ridges standing opposite to each other. a is a dovetailed plate
fitting down upon the tops of the ridges a¹ and a³ is a second dovetailed plate
fitting up to the bottoms of the said V-ridges. a is the parallel shank of the
pivot pin. a5 is the coned head of the said pin.. It has its largest diameter next
to the shank a. This head a fits with a working fit in a correspondingly coned
bearing a in the end of the link K to which it is held. by a headed screw a
as shewn in Figures 24 and 25. a8 is a split bush fitting over the shank a
and resting by one end upon the end of the link K. It is coned externally from
that end in the opposite direction to the coned head a above described, as shewn
at a in Figures 24, 25 and 29. The bottom plate a³ is bored out, to receive the
bottom portion of the coned surface a³. a" is a split bush coned internally to
fit over the upper portion of the coned surface a and within the top plate a
which is bored out to receive it, the bush all standing up above the level of the
said top plate a as shewn in Figures 24 and 25. The bush 8 is parallel above
the coned portion a³ and has an external screw thread a cut thereupon to receive
a tightening nut, a¹³. The two plates a, a3 together constitute a sliding block to
guide the pivot pin along the slot a². It is therefore important that they bear.
with equal pressures upon the V-ridges a¹, a¹, and also that those pressures should
not. be great enough to prevent the block sliding easily along the said slot a³.
They are forced into the latter in the way next described, and to prevent their
pinching the V-ridges too tightly, two set screws a, a, are fitted in one of
them (preferably the top one) beyond which they project in the direction of the
other plate, as best shewn in Figure 24. This third part of the invention
acts as follows. When the nut a13 is turned down the screw-threaded portion.a1%
of the split bush as, the latter is tightened upon the shank a of the pivot pin,
the coned portion a³ of the said bush pulls the bottom plate a³ up the V-ridges al

page_text: while the nut as forces the split bush a¹¹ downwards thereby pushing the 'top
plate a downwards.
The fourth part of the invention consists in an improved device for taking up
wear in each antifriction support of the links K, K¹. It is the same for each of
the supports as many as there may be. Heretofore each support. has consisted
of a flat frame over which the respective link has moved, a pair of antifriction
rollers pivotted on the frame, between which it has moved, and a cap plate. to
keep the link and rollers down on the frame. This fourth part of the invention
is illustrated in Figures 35 to 39 which shew it as applied to one of the supports
of the link K. According to it the frame K2 has a block K5 formed thereupon.
K is the link sliding in a groove in the top of the block K5 as clearly shewn in
Figures 38 and 39. 7, 7, are the antifriction rollers above mentioned one on each
side of the said link K, each pivotted upon a vertical stud K' as heretofore.
Each stud K stands up from a block K8. Both these blocks slide in a groove K
in the block K. The direction of this slot K9 is transverse to that of the link K
as clearly shewn in Figure 35. K10 is a stud fast to and projecting from the side
of the block K at right angles with the groove. K", K, are a pair of pins fast
by their outer ends to a yoke K12 adapted to slide on the stud K. Both pins K
slide through bushes K, K¹³, in holes K", K14, in the block K. Their inner
ends K, K, are tapered as shewn best in Figure 36. These tapered ends enter
holes K, K, in the blocks KB, K8. The inner sides of these holes are parallel
with the tapered ends K15, K15, of the pins K", K", and the said ends bear against
the respective inner sides. The outer end of the stud K10 is screw-threaded and is
fitted with a setting-up nut K" and a locking nut K18 8 is the usual cap plate.
This part of the invention acts as follows. When there is wear between the
rollers 7, 7, and their pivots K', K. or between the rollers 7, 7, and the edges
of the link K, the yoke K12 is set up towards the block K5 by turning the setting-
up nut K along the stud K10, thereby pushing the tapered ends K15, K15, of
the pins K, K", farther through the holes K, K, in the blocks K, K, and
as these ends bear upon the inner and tapered sides of the said holes, pushing
the blocks K8, K8, towards each other, the pivots K7, K7, up to the inner sides of
the pivot holes in the rollers 7, 7, and the latter up to the respective edges of
the link K, thereby taking up all the wear.
The fifth part of the invention consists in an improved device for taking up
the wear between the ball c¹ through which the tracer rod D slides and the pair
of links K, K¹. It is illustrated in Figures 40 to 43. The path of the ball c
is formed by four coned races 62 cut in as many L-shaped bars b, two of which are
held to the under link K and two to the upper one K by screws b as clearly
shewn in Figures 42 and 43. There are slots 10 in these bars for the screws: 6
to pass through, instead of holes, for a reason which will appear in due course.
According to this fifth part of the present invention, the outer edge of each
bar b, is tapered as shewn best in Figure 40. 67 is a reversely tapered wedge work!
ing between each edge 66 and the respective portion of the link. 68 is a stud fast
to and projecting from the side of each link K, K', at right angles with the length
of the respective link. 6º, 6º, are two pins parallel with each stud b. Each pin
is fast to the respective yoke 6 by its outer end, as shewn best in Figure 40,
while its inner end bears against the respective wedge b. The two wedges b
in the under link K rest upon the two respective bars b, but the two in the upper
link K¹ rest upon suitable supports such as the projecting portions of the heads 618
of screws carried by the links K¹. This fifth part of the invention acts as follows:
When wear has been set up between the ball and the bars b, the yokes blare
set up towards their respective links K and K¹, by turning the locking nuts 618
in the right direction, thereby causing the pins 69 to push in the wedges b
between the respective links and bars 66, and moving the said bars b. up to the
ball c¹, the slots 10 in the bars b permitting them to so move on the screws b
Z, Z are dust caps on the pivot pins of the first, second and third parts of the
invention.
* 3

page_text: The sixth part of the invention is illustrated in Figures 3 and 4 and 44 to 55.
It consists in improved bearings for the reciprocating blocks E, E¹. Reference
to the Specification of the above mentioned Patent 11938 of 1895, will shew that
the top block E slides upon the bottom block E and the latter upon the plate B¹
on the standard B, by means of the double V tenon and groove so well known in
the compound slide rest of the turning lathe. According to this sixth part of
this present invention, the said tenons and grooves are replaced by improved
ball bearings for each block, the bottom block E being replaced by a skeleton
frame. The constructional details of the bearing for the frame are
the same as those of the top block. El is the top block and Fi
the skeleton frame that replaces the bottom block of the patent above mentioned.
F, F, F are three sockets carried by the frame F¹ on which they stand sym-
metrically and with their axes parallel with each other. In the underside of
the top block E, there are as many cavities e as there are sockets F2 on the frame F¹.
These cavities are symmetrically arranged in the said block E¹ and are parallel
with each other. They are wide enough to receive the tops of the sockets F
and long enough to allow of the reciprocating motion of the block El upon
the frame F¹. el, el are a pair of lugs depending from the top block E¹
at the ends of each of the three cavities e. é is a bar held by screws e³ to each
pair of lugs e e, are two webs at right angles with the bar e³, one above
it and one below it, and forming with it four races for as many sets of balls e
The sockets 2 are tapered internally as shewn in Figure 44. e is a bush
externally tapered to the same angle as a socket F2 but in the opposite direction
and fitting therein as shewn. It is split as shewn at e" and has three grooves e¹0
to facilitate its being closed upon the ball race bar e³. Its internal bore is parallel
. and fits over the ball race bar e2 and the balls e as shewn. Its smaller end
projects beyond the respective socket F2 and is screw threaded to receive a
tightening nut es which bears against the said socket. Each bush e is prevented
from turning within its socket F by a set screw screwed through the said
socket until its nose stands in one of the three grooves e¹0. Each of the four ball
races is stopped at each end to prevent the respective set of balls e rolling out,
by a stopping piece e¹ which is held in the position shewn in Figures 48 to 50
by a dovetailed tab é fitting in an undercut seating e" and a screw e¹5 passed
through a hole el in the said tab into a screw hole el in the bush e. The slot e¹8.
adjoining each seating e in the smaller end of the bush e is to facilitate the
cutting of that seating.
The three sockets F2 with their ball race bar e, ball races e, balls e and
bushes e constitute the ball bearings for the top block E' upon the frame F'.
Those for the frame F¹ upon the plate B are substantially identical. F³, F3, F³,
are the sockets formed on the frame F with their axes at right angles with those
of the sockets F2, F2, F2, and the ball race bars F, F, F are screwed to the
plate B as shewn in Figures 3 and 4. This sixth part of the invention is used
as follows. As soon as wear between the balls e, the races e and the split bush e
declares itself, it is taken up by screwing the nut 8 up against the respective
socket For 1 as the case may be.
$1
The seventh part of the invention relates to improvements in the driving
mechanism of the cutter spindles or quills. It is illustrated in Figures 56 to 64.
A reference to the Specification of Letters Patent 11938 of 1895 above mentioned,
L shews that the quills are short, that each is in one piece, that it turns in bearings
at each end, and that it is driven by a band passed round a driving pulley fast
on it between the said bearings. It has since become the practice to make the
:bottom bearings in a bridge piece extending from one vertical post to another,
and the top bearings in a second bridge piece supported by the same posts, the
driving pulleys being mounted upon the tops of the respective quills
which stand up above the top bridge piece to receive them. That
arrangement is faulty in that the driving bands pull the quills over, causing
excessive friction and consequently much heat, which latter spreads to the bottom

page_text: bridge piece, and distorts it, consequently making the quills rotate out of truth.
The pull of the driving bands has further the effect of wearing the top bearings
eccentrically and this eccentric wear does more even than the heat to spoil the
rotation of the quills.
The objects of this seventh part are, firstly, to prevent the heat generated in the
top bridge spreading down the quills into the bottom bridge; and, secondly;
to prevent the above mentioned eccentric wear spoiling the rotation of the quills
in the bottom bridge. The invention consists in mounting the driving pulley
of each quill upon a spindle separate from the quill and connected with it by
a device having a transverse sectional area much smaller and a superficial area
much larger than the transverse sectional one of the spindle, the pins thereof
fitting loosely in the notches of the discs so as not to communicate any eccentric
rotation of the spindle to the quill. This will be best understood by reference
to the accompanying Figures 56 to 64, in which 1 is the fixed bridge piece. Its
ends' 11", are bent backwards to facilitate its fixation to the machine, and 2, 2,
are bolt holes in the said ends through which are passed the devices which hold
it in its working position to the said machine as heretofore. 3;3, are two vertical
posts fast by their bottom ends to the respective ends 1"; 1", of the bridge piece 1
and standing up vertically therefrom. 4 is the top bridge piece. It stands
immediately over the bottom one 1; and parallel with it. Its ends 4", 4", are
bent back to connect with the posts 3, 3, respectively. Heretofore this top
bridge piece has been fixed at a definite distance from the bottom one 1 above
described, but according to 'the present invention it must be supported by the
machine in such a way that it can be readily moved away from or towards the
fixed bridge piece 1. The mechanism for so moving it, as well as the supports on
which it is moved, may be of any well known and suitable type, and an experienced
mechanic will easily adapt one. According to the one illustrated, the said bridge
piece 4 has a socket 5 at each end of it, which socket fits over the respective post 3
so that it can be moved up and down it. The drawings show two different
niechanisms for so moving the said bridge piece 4. One of these is illustrated in
Figures 56, 57 and 58, and the other in Figures 62 and 63.
.
Referring to Figures 56, 57 and 58, 6 is a vertical rack let into the rear side
of each post 3. 7, 7, are a pair of lugs fast to and projecting rearwardly from
cach socket 5, one lug on each side of the rack 6. The four lugs 7, have bearings
in them to receive a spindle 8, which turns freely therein. 9, 9, are pinions
between the two lugs 7, 7, of each pair, gearing with the respective rack 6 and
having the spindle 8 passed through them. Both pinions 9 are made fast to the
spindle 8 so that they must rotate with it. 10 is a collar fast on one end of the
spindle 8 outside the respective pair of lugs 7. 11 is a milled head fast on the
opposite end of the said spindle outside the respective pair of lugs 7, to serve as
a means for turning the spindle S to raise or lower the top bridge piece 4 by
means of the engagement of the pinions 9, 9, with the racks 6, 6.
Referring to Figures 62 and 63, 12, 12, are a series of equal and equidistant
sockets set column-wise in the rear face of each post 3, those of one set being
respectively on a level with those of the other. 7 is a rearwardly projecting
lug fast on each socket 5, and 13 is a bolt capable of sliding in a horizontal
socket 14 in the lug 7. The nose of the bolt 13 is shaped to enter the particular
socket 12 opposite which it may happen to be, and into which it would then be
forced by a spiral spring 15 resilient within the said bolt socket 14, between
the rear end of the bolt 13 and a screw 16 which closes the rear end of the
socket 14. 17 is a lever pivotted on a fulcrum 18 and having one end engaged
in a slot 43 in the bolt 13 and the other projecting above the lug 7" in order
that it can be rocked forwards to withdraw the bolt 13. To change the position
of the bridge piece 4 with reference to. the bridge-piece 1, both bolts 13 are
withdrawn from their respective sockets 12 by pressing the projecting arms of
the levers 17 towards the respective posts 3, the bridge piece 4 moved in the
desired direction until the noses of both bolts 13 are opposite the pair of sockets 12

page_text: corresponding with the desired position of the said bridge piece, and the lever 17
released, whereupon the springs 15 will force the noses of the bolts 13 into
the last mentioned sockets.
The bridge pieces 1 and 4 are shewn as long enough between the posts 3, 3,
to receive six quills 21 and as many spindles 19, driving pulleys, and pin and
notched disc devices, but the number is not affected by the invention-it may
be any from unity upwards. The sockets 20 which receive the bushes 26 of the
spindles 19 are deeper than the thickness of the bridge piece 4 by the presence
on the top of the latter, of raised bearing surfaces 23 integral with it and which
have the effect of providing for a longer bush. The thickness of the bridge
piece 1 is doubled between the posts 3 and has likewise raised bearing surfaces 25
for collars on the quills 21 to rest upon. Each spindle is co-axial with the
respective quill 21, but the two are not continuous with each other, neither do they
touch each other directly, and not indirectly over a surface as large as their cross
section.
A spindle 19 is mounted in its socket 20 as follows. That socket has a larger
diameter on its under side than on its top. It receives a corresponding tapered
bush 26 which is long enough to stand above the top of the bridge piece 4 when
it is in working position and in which position it is held by a nut 27 which is
screwed down the upstanding and screw-threaded end of the bush 26, against
the respective surface 23. The bush 26 is split and grooved vertically as shewn
in Figure 9. 28 is the driving pulley held to the said spindle 19 by being
passed over its upstanding end and pinched between the nut 27 and a second
one 29 which is screwed down the screw-threaded top end of the said spindle 19,
the pulley revolving upon the nut 27 and carrying the respective spindle 19
with it.
'
The general construction of a quill 21 is as heretofore. 30 is a tapered bush
held by a screw-thread 31 to a sleeve 44 which in its turn is held by a screw-
thread 32 to a collar 33 resting on a surface 25 to which it is held by any suitable
device such as a pair of studs 36 fast to the collar and engaging in a pair of
holes 37 in the respective surface 25.
38 is a disc fast upon the bottom end of a spindle 19. In diameter it is much
larger than the said spindle. 39, 39 are pins fast to the disc 38 near its edge,
one standing thereon opposite to the other and both parallel with the axis of the
spindle 19. 40 is a disc held fast upon the top of a quill 21 by a pin 41. It
is concentric with and therefore opposite the disc 38. 42, 42, are a pair of holes
in the disc 40 adapted to receive the bottom ends of the pins 39, 39. It is through
the disc 38, pins 39, 39, holes 42 and disc 40 that the rotary motion of the
spindle 19 is communicated to the quill 21. With reference to the first object
of this seventh part of the invention, it is pointed out that whatever may be the
heat generated between a spindle 19 and its bush 26, it can only reach the
respective quill 21 by passing through a disc 38, a pair of pins 39 and a disc 40.
According to the said seventh part of the present invention, the joint transverse
sectional area of the pair of pins 39 is much smaller than the transverse sectional
area of the spindle 19, thereby impeding the passage of the said heat; while the
joint superficial areas of the discs 38 and 40 and the pair of pins 39 is much
larger, thereby conducing to the escape of that heat to the surrounding air.
With reference to the second object, it is pointed out that as the holes 42 are
larger than the pins 39, it follows that if the bearing of a spindle 19 does
become eccentric, the above described loose fit between the pins 39 and the
respective disc 40 will compensate for that instead of imparting the irregular
rotation of the spindle 19 to the quill 21.
The quills 21 are put out of gear by moving the bridge piece 4 upwards on
the posts 3, 3, until the pins 39 are free of the holes 42; and put into gear again
by lowering the top bridge piece 4 until the pins 39 engage in the respective
holes 42 again.
To facilitate the re-engagement of the pins 39 with the respective discs 40,

page_text: there is a second pair of holes 42* in each disc, at right angles with the holes 42,
as illustrated in full lines in Figure 60 and in dotted lines in Figure 58.
To provide for any one or more of the quills 21 being thrown out of gear
while all the others are left in gear, there is substituted for each pin 39, a
tube 39 and bolt 45 as illustrated in Figure 61. Each tube 39 is made fast
to the respective disc 38 in the same way as a pin 39, but it is sufficiently shorter
than the latter to stop short of the respective disc 40 when the quill 21 is in gear.
The engaging and disengaging device is a bolt 45 which slides tightly in the
tube 39 and is moved up and down therein to make it engage and disengage in
the respective hole 42 by a thumb bit 46 fast to the said bolt and projecting
radially outwards for a sufficient distance for the purpose, through a slot 47
in the side of the tube 39.
The eighth part of the present invention relates to improvements in chucks
and vices for holding a series of matrix blanks in an engraving machine during
the process of their formative cavities being cut therein or other similar work
being done to them, and the object of it is to make the chuck automatically
adjustable for variations in thickness of the series of matrix blanks, that is of
those in the chuck at one time. It is illustrated in Figures 65 to 78.
Y is a matrix blank. It is set in the improved chuck partly by the side edge y³
in which the formative cavity y is to be cut, and partly by the bottom shoulder y
next to that side edge. For a full description of the matrices produced by
cutting the formative cavities in the blanks Y, reference may be made to the
Specification of Letters Patent 14582 of 1890. Each matrix blank Y of the
series which the improved chuck is capable of containing at one time, is treated
in the same way, so that a description of the chuck and vice in respect of one
blank will be a description of it in its entirety. This chuck is shewn in detail
in Figures 75 to 78. 1 is a flat plate having as many openings 2 formed in it as
there are matrix blanks Y to be chucked at once. The sides 3 of these openings
are bevilled as shewn in Figures 66 and 68. 4 is a plate against which a blank Y
is clamped. It hangs vertically from the plate 1 on the left hand of an opening 2,
and has a sliding motion lengthwise of the said plate by means of a horizontal
continuation of it 4 having dovetailed side edges engaging in a double V-groove
in the under side of the plate 1. To prevent a plate 4 becoming detached from
the plate 1; there is a short slot in the continuation 4 into which projects a
screwed stud 7 fast to the plate 1. 8 is an end piece held fast to the end
of the plate 1 by steady pins 8 and screws 8b as shewn in Figures 67 and 68.
Each piece 8 has a rearwardly projecting declined surface 9 and projects to the
front of the plate 1 as clearly shewn in Figures 66 and 76. 10 is a rod carried
by the end pieces, 8, 8, at a short distance in front of the plate 1 and parallel
with it. 11 is a plate normally standing vis-a-vis of the plate 4. It swings on
the rod 10 by a socket 12. 13 is a thumb piece fast to the opposite side of the
said socket, the thumb piece 13, socket 12 and plate 11 forming a lever having
its fulcrum in the rod 10. 14 is a spring surrounding the rod 10 on each side
of the socket 12, to return the said lever into its normal position with reference
to the respective plate 11. 15 is a washer on the rod 10 between each spring 14
and the respective socket 12, and 16 is a filling-up collar between the end
springs 14 and the respective end pieces 8. 17 is a bracket stud projecting laterally
from the middle of the bottom edge of the plate 11 in the direction of the plate 4.
18 is a post fast to and projecting upwards from the rear end of the plate 11
above the plate 1 and having a notch 19 in its rear edge in which engages a
detent 20 carried by the rear edge of the plate 1, when the matrix blank Y is
held between the plates 4 and 1, as shewn in Figure 77. A spring detent 20
is fast on the end of a horizontal spring bar 21 which is held to the plate 1 by
a screw 22. 23 is a bar spring depending from the rear edge of the plate 1 behind
the place which a matrix blank Y will occupy in the chuck. It is held to the
said plate 1 by a screw 24 passed through it and a packing block 25, into that

page_text: plate as shewn best in Figures 76 and 78. The spring stands normally in a
forwardly bent position as far as the plate 4 as shewn in Figure (68.
The improved chuck made as above described is held in the improved vice
next described: E is the reciprocating top block of the engraving machine e.g.,
the one described in the Specification of the above mentioned Letters Patent
11938 of 1895, to which. the said vice is made fast by screws 57. 58, 58 are
alignment strips fast on the block E, to assist, the said screws in holding the
vice always in the same position upon the said block. 26, 26 are the vice end
plates held by screw's 27 to the vice body 28 as shewn in Figures 65 to 68. 29
is a stopping post fast to each vice end plate 26, up to which the plate 1.of the
improved chuck butts, the end pieces 8, 8, thereof fitting just outside the said
posts 29, 29, as shewn in Figure 66. The plate 1 is held up to the posts 29, 29,
by set screws 30, 30, working in posts 31, 31, on the end plates 26, 26, and
bearing on the respective declines 9, 9.
•
32, 32 are a pair of V strips fast upon the top of the vice body 28 and transverse
thereof. 33 is a frame having a corresponding pair of strips 34 fast on its under
side to engage with the respective strips 32, 32, as shewn in Figures 65 and 69.
35, 35 are side pieces along the sides of the frame 33 and fast to it. 36 is a
double V groove along the inner face of each side piece 35, the two grooves
being opposite to each other and of the same size. The inner faces of the said
side pieces 35 are tapered at the same angle towards each other from front to rear.
37, 37 are a pair of vice jaws. Their opposite faces are parallel and at right angles
with the length of both chuck and vice, while their outer faces are tapered to
the same angle as the inner faces of the side pieces 35. The two jaws 37 are
capable of being moved up to and away from each other by the respective frame 33.
The vertical plane in which they would meet if they were moved up to each other,
is the one that intersects the blank. Y intermediately of its two sides when that
blank is in position between the two plates 4 and 11 of the improved chuck.
38 is a dovetail fast to and projecting from the tapered face of a jaw 37 and
engaging in the groove 36 of the respective side piece 35. 39 is a slot across a
strip 32 and 40 is a projection from the under side of each vice jaw 37, passing
downwards through the frame 32 and engaging in the said slot. Thus the two
pairs of strips 32 and 34, serve as a guide for the motion of a frame 33 to or
fro across the vice body 28; a pair of grooves 36 and dovetails 38 provide for
the two vice jaws 37 of a pair being moved up to or away from each other,
and the engagement of the respective projections 40 in their slots 39 keeps the
said motion of the jaws steadily aligned with the length of the vice and chuck.
The chuck and vice are shown as capable of containing a series of four blanks
Y at one time, 'and as the engraving machine works from only one pattern,
say an M, all the blanks of that series would be, presumably, of the same thick-
ness. This identity in thickness is however found in practice to be more--normal
than real. Variations in thickness of a greater or less degree, are always present
in a lot of blanks; and when a series of them is to be chucked and held in the
vice at one time, those variations tend to prevent the several blanks of the
series being gripped with equal pressures, in which case -only the thickest one
would be held steady and all the others would be more or less unsteady. To
provide for all the blanks of a series being gripped with an equal pressure and
held equally steadily in the chuck and vice, we have adopted the following
combination which is shewn in all its details in Figures 69 and 71. 41 is a rack
held to the underside of a frame 32 intermediate of its sides and parallel there-
with, by screws 42 and steady pins 43. Each rack projects downwards into a
groove 41 situated between the strips 32 of a pair. 44 is a spindle turning in
bearings 45 in the two end pieces 26. 46 is a longitudinal bore through the vice
body 28 and concentric with the spindler44; and within which, the latter and
its addenda next described, work. Additional bearing surface for the spindle 44,
is provided by a thrust collar 47 fast on the spindle and turning in a special

page_text: 54
bearing in the right hand end piece 26, and a series of collars 48 likewise fast
on the said spindle and bearing against the surface of the bore 46. 49 is a
spur pinion fast to a half clutch 50 loose on the spindle 44 and engaging with a
rack 41. 51 is the corresponding half clutch engaging with the spindle 42 by
a slot 52 in the said half clutch embracing a feather 53 on the spindle 44.
is a spiral spring pushing from a collar 48 and against the half clutch 51 to
keep it engaged with its fellow half clutch 50. The spring 54 of the right hand
combination bears against the thrust collar 47. 55 is a hand wheel fast on one
projecting end of the spindle 44 for turning the latter, and 56 is a grip on the
opposite end piece 26 adapted to grip the spindle end projecting beyond that end
piece, to hold it steady, as shewn in Figures 65, 68 and 69.
The action of the improved chuck and vice are as follows. The improved
chuck is taken off the improved vice and filled with blanks Y by pushing each
of the latter foot on against a spring 23 until the shoulder y enters between the
said spring 23 and the rear edge of the plate 1 as shewn in Figure 77. The
respective plate 11 is then swung up on its fulcrum 12 by its handle 13 until
the detent 20 engages in the notch 19 in the respective post 18, by which time
the projection 17 on the plate 11 has come into contact with the then bottom
edge of the blank Y and has forced its top edge y3 up to the under face of the
plate 1. The chuck is then laid upon the vice in the position shewn best in
Figüres 66, 67 and 68, and fixed there by the set screws 30. The spindle grip 56
is now loose and the jaws 37 of each pair standing apart from each other, as they
were set to allow of the clutch being taken off the vice with the last lot of
matrices in it. Each pair of plates 4 and 11 with a blank Y between them,
hangs between the two jaws 37 of a pair. The spindle 44 is then turned by
the thumb wheel 55 in the direction indicated by the arrow in Figures 65 and
67, thereby moving all the frames 32 and side pieces 35 from their then rearward
position to the front. Each pair of side frames closes the two jaws 37 of the
respective pair towards each other and keeps on closing them until the pair
of plates 11 and 4 and the blank Y between them are properly gripped; where-
upon the half clutch 51 disengages from its fellow half clutch 50, because the
respective spring 54 is more compressible than the said plates 11 and 4 and
blank Y.
The first blank Y to be properly gripped' will be the thickest one of the series,
and the respective clutch will be the first to disengage. The next thinnest
blank will be the second one to be gripped properly and so on until when the
thinnest of the series is properly gripped between its respective pair of jaws 37,
all the clutches will disengage as the spindle 44 is turned.
J
Having n
now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed, we declare that what
we claim is :-
1. In an engraving machine of the class specified, the combination of two
levers having bushes tapered in opposite directions fast in them; a supporting
bracket; a fulcrum pin supported thereby and having a parallel shank where
it passes through the said bracket and the bush in the upper of the two levers
and a tapered head fitting in the bush in the bottom lever; an
oppositely tapered bush between the said shank and the bush in the
upper lever and loose upon the said shank; and a nut upon the screw
threaded nose of the fulcrum pin on the opposite side of the supporting bracket
and adapted by being turned down the said pin towards the tapered head of it
to draw the bushes in the two levers towards each other.
2. In an engraving machine of the class specified, the combination of lever
block adjustable lengthwise in a slot therein; parallel pivot pin; externally
tapered and split bush between the said pin and the sliding block having a
screw threaded end standing up above the said block and a nut adapted by being

page_text: screwed down the said screw threaded end to close the bush upon the pin and
to draw it up through the said block.
3. In an engraving machine of the class specified, the improved device for
taking up wear in the joined ends of the link end and the lever end, as described
with reference to Figures 23 to 34.
4. In an engraving machine of the class specified, the improved device for
taking up wear in each anti-friction support of the link, as described with
reference to Figures 35 to 39.
5. In an engraving machine of the class specified, the improved device for taking
up wear between the sliding ball joint on the tracer rod and the two links, as
described with reference to Figures 40 to 43.
6. In an engraving machine of the class specified, the combination with the
fixed plate B of reciprocating block E, reciprocating frame F¹ and improved ball
bearings for each, as described with reference to Figures 3, 4 and 44 to 55.
7. The combination of fixed bridge piece; a quill adapted to turn in a bearing
therein; a movable bridge piece parallel with the said fixed bridge piece; fixed
supports on which it can be moved away from or towards the said fixed bridge piece;
mechanism for so moving it; a driving spindle adapted to turn in a bearing on
the said movable bridge; and a connecting device having a transverse sectional
area smaller and superficial area larger than the transverse sectional area of the
driving spindle and adapted to hold the quill in or out of gear with the spindle;
as described with reference to Figures 56 to 64.
8. The combination of fixed bridge piece; a quill adapted to turn in a
bearing therein; a movable top bridge piece parallel with the said fixed bridge
piece fixed supports on which it can be moved away from or towards the said
fixed bridge piece; mechanism for moving it; a driving spindle adapted to
turn in a bearing in the said movable bridge; a connecting device having a
transverse sectional area smaller than, and a superficial area larger than the
transverse sectional area of the driving spindle; and means for disengaging
that device from or engaging it with the quill; as described with reference to
Figures 56 to 64.
9. The combination of fixed bridge piece; a series of quills adapted to turn
in bearings therein; a movable bridge piece parallel with the said fixed bridge
picce; fixed supports on which it can be moved away from or towards the said
fixed bridge piece; mechanism for so moving it: a series of driving spindles
each one co-axial with its respective quill and adapted to turn in bearings in
the said movable bridge; and a connecting device between each driving spindle
and its quill adapted to hold the latter either in gear or out of gear with the
former, such connecting device having a transverse sectional area smaller, and a
superficial area larger than the transverse sectional area of the driving spindle;
as described with reference to Figures 56 to 64.
10. The combination of chuck having pairs of plates adapted to hold matrix
blanks between them; a vice block having frames movable transversely of it;
vice jaw's standing outside the respective pairs of plates above mentioned and
engaged by said plates on the said frames to move them up to and away from
each other, mechanism for moving all the pairs of vice jaws together, and a chuck
to each pair adapted to disengage as soon as the respective pair of jaws is properly
closed upon the pair of plates and matrix blank between them; as described
with-reference to Figures 65 to 78.
11. The improved series matrix chuck consisting of flat plate 1 having plates 4
depending therefrom; plates 11 pivoted upon a rod 10; spring detents 21; and
matrix holding springs 23 and projections 17; as described with reference to
Figures 65 to 78.
12. The improved vice consisting of vice block 26; frames 32 having side pieces
35 fast thereupon and capable of to and fro motion transversely upon the said
block in guides; a pair of vice jaws capable of motion to and from each other

page_text: in a direction at right angles with that of the motion of the frame; tapered
grooves in the side pieces and dovetailed pieces on the vice jaws engaging therein;
a rack fast upon each frame; a spur pinion engaging with each rack, a spindle
carrying all the spur pinions loose on it; a clutch for each pinion on the spindle,
half fast to the respective pinion and half engaging loosely with the said spindle;
and a spring adapted to close the clutch and to allow the clutch to open when the
vice jaws are properly closed; as described with reference to Figures 65 to 78.
Dated this 30th day of June 1899.
CHAS. S. WOODROFFE, Fel.Ch.Inst.l'.A.,
188, Fleet Street, E.C., Agent for the Applicants.