Improvements in the Vices of Machine Tools.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Vices of Machine Tools.
We, WILLIAM HENRY LOCK, Manager and Secretary of The Linotype Company,
Limited, of No. 188, Fleet Street, in the City of London, and BERNE NADALL, of
No. 6118, Princeton Avenue, Englewood, Chicago, in the State of Illinois, U.S.A.,
at present residing at No. 19, Stockport Road, Altrincham, in the County of
Chester, Designer, do hereby declare the nature of this invention to be as
follows:-
The present invention relates to improvements in vices for holding a series
of pieces during the time each of the latter is being subjected to the action of a
machine tool. It has been developed with particular reference to the machine
tool described in the Specification of Letters Patent No. 11938 of 1895 when
used to engrave the matrices proper or formative cavities in the matrices of the
well known Mergenthaler linotype machine. The blank of such a matrix is a
rectangular piece of metal having a rectangular notch in one side edge of it, in the
bottom surface of which notch (that is the surface of it which is parallel with
the matrix edge above mentioned), must be cut the matrix proper or formative
cavity in which will eventually be cast the face of the respective character on the
printing edge of the linotype. It has also four rectangular lugs, ene projecting
from each corner at right angles with the respective side edge, and all symmetrical
with each other and the blank. The blanks have hitherto been held in a vice
in which each one stands in a sunk and rigid bed, and requires and receives special
adjustment to the respective cutter, independently of the other blanks in that
vice. It should be understood that a blank, even when it is standing in the vice
with its edge at right angles with the axis of the cutter, may be in a wrong
position and require adjustment in respect of being either too high or too low, too
much to the right or to the left in the direction of the length of the matrix
edge, or too much to the rear or to the front in the direction of the width of
that edge. If it is too high, the formative cavity will be cut too deep; and not
deep enough, if it is too low. If it is too much to the right or to the left in the
direction of the length of the matrix edge, the formative cavity will not hang
from the right hanging line--the imaginary transverse line from which the
letters of a fount are assumed to hang. If it is too much to the front or to
the rear,
the formative cavity will be nearer to one side of the matrix than to the
other.
The objects of the present invention are:-
(a) Capacity for holding the matrix blanks in position regardless of variation
in their thickness:
(b) Easier and quicker operation of the vice by the operator in charge of the
machine tool, than has been possible with other vices hitherto used:
(c) Positive adjustment of all the matrices in the vice at one time, by a single
operation:

page_text: (d) Capacity for cutting the matrix blanks after they have been finished in
all other respects and leaving them true in all their dimensions.
The two side edges of the blank above described and the two edges of the
shoulders that face each other, are assumed to be truly parallel with each other
respectively, and each pair at right angles with the other pair.
In carrying the invention into effect, there is provided a modified form of vice
of the well known instantaneous grip type and a magazine for holding the series of
blanks. The magazine consists substantially of two pieces hinged together at
or near the bottom and the blanks stand edge-up in it. The inner faces of the
said pieces are so positioned and stand in such a relation to each other that, when
they are closed upon the blanks, the said faces bear upon the front and rear sides
of the said blanks and upon the top edges at or near each end thereof. That
portion of a face which bears upon the top edge of a blank consists of two pro-
jections, one of which projections serves as an abutment for one of the shoulders
on that edge of the blank. Both projections stand between the two shoulders on
the said edge. Each blank is held up to them by a spring adapted to press
centrally against, or to pull centrally upon, its opposite side edge; and up to
the abutment, by a spring adapted to press against the adjacent end of the
blank (which end in the case of a linotype matrix, is its foot). Consequently,
the insertion or renewal of the blank involves only the pressing backwards of two
springs. As soon as a fresh matrix is inserted, the said springs expand and press
it into its theoretically correct position up against two surfaces equally and
likewise true, namely the bottom faces of the two projections and the lateral face
of the one of them. The proper fit of the front and rear pieces of the magazine
up to the blanks in spite of the varying thickness of the latter, is provided for by
making one of the hinged pieces capable of sliding to and from the other piece on
the pivot that holds them together. To further accommodate varying thicknesses of
matrices, either piece, front or rear, of the magazine, may be fitted with spring-
seated and spring-protruded studs adapted to bear upon the respective side faces
of the blanks.
The front piece of the magazine may be dispensed with, in which case the front
jaw of the vice next described bears directly upon the blanks.
The top portion of the back jaw of the vice is continued to the front and
terminates in a surface horizontal in every sense so as to serve as an abutment for
the top of the magazine to bear against As both the said surface and top are
each of them true and parallel with each other their combination provides for the
top edges of the blanks in the magazine being held in the theoretically proper
plane. The face of the front jaw of the vice, and that of the front piece of the
magazine (if there be one) are both vertical, but the face of the back jaw and the
outer face of the rear piece of the magazine are both inclined at the same angle
and are parallel with each other. The front jaw of the vice is continued to the rear
to stand under the magazine and for it to rest upon, and the top face of that
continuation and the bottom face of the magazine are likewise both inclined to the
same angle and parallel with each other, but the two pairs of inclines meet at
an acute angle behind and along the bottom of the magazine, so that the closing
of the front jaw of the vice upon the magazine, forces the latter backwards and
upwards against the two true surfaces already described, and so making it meet
them both respectively at the same moment, because the relative positions of the
latter have been settled with that meeting in view.
The forward continuation of the back jaw of the vice and the top piece of the
magazine are both cut away laterally to expose as much of the top edges of
the blanks as may be necessary to meet variations in the positions of the formative
cavities lengthwise of those edges.
There is a groove for oil in the top of the back jaw of the vice and suitable
conduits lead from it to each exposed portion of blank edge, so that the supplies
of oil to all the cutters shall be constant and equal.
The magazine is slid into the vice between the jaws from one side and meets

page_text: a fixed abutment at the other side. The position of this abutment is such that it
corresponds with a known position of the blanks in the magazine with reference
to the respective cutters. This will be clearer after a reference to the specification
above mentioned. In the machine tool there described, the pattern holder has not
any horizontal motion, only a vertical one to and from the tracer rod. Therefore
when the magazine is up to the abutment last described, a certain point, and only
that point in any exposed portion of edge, corresponds with the centre of the
pattern. If the magazine always fits home in the vice to one plane the centres
of all the formative cavities will coincide with the centre of that pattern. Now it
sometimes happens that there is a demand for a fount of matrices having the
centres of their formative cavities farther along the top edges of the matrices. To
meet such demands, there is provided a series of trued filling pieces, adapted to
stand up against the said abutment and hold the blanks as much to one side of
their normal position as is necessary to get the formative cavities cut in the desired
positions relatively to the top ends the ends opposite to the feet in linotype
matrices or (in other words) relatively to the hanging line. This system of
filling pieces is preferred to any micrometer screw gear as being simpler and
less likely to mislead the operator when he is in doubt as to the cause of any
inaccuracy in the position of the formative cavities. For instance there may be
some doubt about either the position or the action of a micrometer screw, but
there cannot be any as to the presence between the abutment and the magazine,
of a certain filling piece.
The magazine is held laterally up to the abutment or to the filling piece sup-
ported by that abutment, as the case may be, by a suitably supported inclined
arm adapted to be pulled over the opposite end of it, by the arcual motion of a
hand wheel or a lever. The wheel or lever is fast on one end and the incline fast
on the other end of a rod turning in a bearing in the back jaw of the vice. Or the
incline may be on the end of the magazine, the arm being parallel. If preferred,
the outside bottom face of the magazine and the corresponding face of the rearward
extension of the front jaw of the vice, may be declined towards the abutment last
mentioned, in substitution of the above described incline and wheel or lever, or
in combination with them or their equivalent.
When or if preferred, the top of the magazine may be milled to allow it to
spring in or out as the case may be. Such milling would be in substitution of
the respective spring devices.
Datad this 4th dor of Nambian 1000
CHAS. S. WOODROFFE,
Agent for the Applicants.
Improvements in the Vices of Machine Tools.
We, WILLIAM HENRY LOCK, Manager and Secretary of The Linotype Company,
Limited, of No. 188, Fleet Street, in the City of London, and BERNE NADALL, of
No. 6118, Princeton Avenue, Englewood, Chicago, in the State of Illinois, U.S.A.,
at present residing at No. 19, Stockport Road, Altrincham, in the County of
Chester, Designer, 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 vices for holding a series of
pieces while each of the latter is being subjected to the action of a machine
tool. it has been developed with particular reference to the engraving machine

page_text: described in the Specification of British Letters Patent No. 11938 of 1895 when
used to engrave the formative cavities of the matrices of the well known Mergen-
thaler linotype machine. The blank of such a matrix is a rectangular piece of
metal having a rectangular notch in one side edge of it, in the bottom surface of
which notch (i.e. the surface of it which is parallel with the side edge above
mentioned), must be cut the formative cavity in which will eventually be cast the
face of the respective character on the printing edge of the linotype. It has also
four rectangular lugs, one projecting from each corner. The engraving machine
referred to is shown in the above mentioned specification as fitted with three
rotary cutters, but no special means for holding the respective three matrix blanks
in their respective positions are shown. They have hitherto been held in a vice in
which each one stands in a sunk and rigid bed and requires and receives special
adjustment to the respective cutter, independently of the other blanks in the vice.
It should be understood that a matrix blank, even when it is standing in the vice
with its side edge at right angles with the axis of the cutter, may be in a wrong
position, and may require adjustment in respect of being either too high or too
low, too much to the right or to the left in the direction of the length of the
matrix edge, or too much to the rear or to the front in the direction of the width
of that edge. If it is too high, the formative cavity will be cut too deep, and not
deep enough if it is too low. If it is too much to the right or to the left in
direction of the length of the matrix edge, the formative cavity will not hang
from the right hanging line, by which term is meant the imaginary line from
which the letters of a fount are assumed to hang. If it is too much to the front
or to the rear, the formative cavity will be nearer to one side of the matrix than
to the other.
The objects of the present invention are:-
(a) Capacity for holding the matrix blanks in position regardless of variation
in their thicknesses:
(b) Easier and quicker operation of the vice by the operator in charge of the
machine tool, than has been possible with other vices hitherto used:
(c) Positive adjustment of all the matrices in the vice at one time, by a single
operation:
(d) Capacity for cutting the matrix blanks after they have been finished in
all other respects, and also for leaving them true in all their dimensions.
The two side edges of the blank above described and the two edges of the lugs
that face each other, are assumed to be truly parallel with each other respectively,
and each pair at right angles with the other pair.
According to the present invention, a modified form of vice of the well known
instantaneous grip type, has combined with it a magazine chuck to hold the series
of blanks, and to be itself held in a particular way between the jaws of the said
vice. This chuck consists of two pieces hinged together at or near their bottom
edges and the blanks stand edge up in it. The inner faces of the said pieces are
so positioned that when they are closed upon the series of blanks, they bear upon
their sides and their top edges at or near each end thereof. That portion of a
piece which bears upon the side edge which is to be cut, consists
of two projections and these stand between the two lugs on the said
edge. One of these projections serves as an abutment for one of the said lugs.
Each blank is held up to the projections, as well as to the abutment just described,
by spring pressure. The magazine chuck having been filled with blanks, is
inserted in the vice and the latter closed upon it. The proper fit of the front and
rear pieces of the said chuck up to the blanks in spite of the varying thicknesses
of the latter, is provided for by making one of the said pieces capable of sliding
to and from the other piece on the pivots that hold them together. The front
piece of the magazine chụck may be dispensed with, in which case the front jaw
of the vice bears directly upon the blanks. The back jaw of the vice overhangs
the magazine chuck to serve as an abutment for it, and the respective faces of

page_text: both vice and chuck are so bevelled that as the vice is closed upon the said chuck,
the latter is forced up against the overhanging abutment above described.
Referring to the accompanying drawings which are to be taken as part of this
specification and read therewith:-
Figure 1 is a sectional front elevation of the vice and magazine chuck; after
some of the front portion of each has been broken away to show the interior:
Figure 2 is a plan of the vice and magazine chuck:"
Figure 3 is a transverse section taken along the line 3-3 of Figures 1 and 2:
Figure 4 is likewise a transverse section illustrating a modification:
Figures 5 and 6 are, respectively, transverse section and rear elevation of a
packing stud:
Figures 7 and 8 are, respectively, sectional plan and elevation illustrating the
use of a substitute packing plate:
Figure 9 is a front elevation on an enlarged scale, of the back piece of the
magazine chuck:
Figure 10 is an end elevation of Figure 9 from the right hand of it:
Figure 11 is a sectional plan taken on the line 11—11 of Figure 9:
Figure 12 is a front elevation of the front piece of the magazine chuck:
Figure 13 is an elevation of Figure 12 from the right hand of it:
Figure 14 is a detail elevation from the right hand of the vice and magazine
chuck showing the clamp and its action; and
Figure 15 is a sectional plan taken on the line 15-15 of Figure 14.
The figures show the invention as made to take three blanks y, only one of
which is shown in Figures 1 and 2. y is the rectangular notch in one side edge y³
of it; in the bottom surface of which the formative cavity is cut, as already
explained; and y', y', y¹, y, are the four rectangular lugs already mentioned.
The
The magazine chuck consists substantially of two pieces hinged together at or
near their bottom edges. is the front piece and y is the back piece.
details of this chuck are shown best in Figures 9, 10, 12 and 13. The bark
piece has a forwardly projecting lug y at each end; and the front piece,
two rearwardly projecting lugs y, y, so positioned on it as to stand just within
the lugs y, y, when the two pieces y, are brought together, as a comparison
of Figures 9 and 12 will clearly show. The bottom edges of the lugs 35, 73, are
declined from the front face of the piece at an obtuse angle therewith as shown
in Figures 3 and 13. A pivot Figure 3-is passed through each hole 766
in the lugs y, y, and the horizontal slot ys in the respective lug y, so that
the two pieces y, y, are both hinged together and are also capable of a rectilinear
motion to and from each other by reason of the pivots ", y, sliding along the
respective slots ys, as Further, the inner faces of the said pieces y, y, are so
positioned and stand in such a relation to each other that when they are closed
upon the blanks y", the said faces bear upon the front and rear sides of those
blanks. The back piece y carries on its top edge, pairs of rectangular pro-
jections y, yo, shown best in Figures 1 and 2. These projections are adapted to
bear upon the edge 3 of each blank y" between the pair of lugs y on that edge
when the magazine chuck is closed upon them. Each projection y serves as an
abutment for the right hand lug y' on the top edge y' of the respective blank y³1;
and each pair y", y for the entire edge y3 of the said blank, as clearly shown in
Figure 1. Each blank is held up to the bottom faces of the said abut-
ments y”, 74, by a spring adapted to press centrally against, or to pull centrally
upon, its opposite side edge. The holding up device illustrated consists of a
horizontal finger y", shown best in Figures 1, 3, 4 and 10, and having its front
top corner convex to facilitate the motion of the matrix blank 31 over it when it is
being put into the vice chuck; a headed pin 42 standing in a vertical cavity y$3
in the back piece y and made fast by its nose to the rear end of the finger ";
and a spiral spring y surrounding the shank of the pin and compressible
between the head thereof and the bottom of the cavity y The top of the

page_text: cavity 3 is closed by a screw y. There is a hole y" in the front piece y opposite
each finger to clear the convex ends thereof when the magazine chuck is closed
upon the matrix blanks y¹. Each matrix blank y¹ is further held up to the right
hand face of the respective abutment y", by a spring adapted to push against the
adjacent end of the blank y³ which end is, in the case of a Mergenthaler lino-
type matrix, the foot of the matrix. 68 is a longitudinal bore or recess in the
back piece y3 y45, y15, y15, are the springs in question. Each is made fast to
a pin Figures 9 and 11-fixed across the bore or recess yes and from which
it pushes a slider y fitting within the bore y68. Each slider carries a finger y
fast to its opposite end and projecting at right angles with the direction of the
spring's push, through the front face of the piece yas shown in Figures 2,
10 and 11. Its front corner on the left hand or matrix blank side of it, is convex
to facilitate the motion of the matrix foot past it, for the same reason that the top
front corner of the finger y is convex. Consequently the insertion of a matrix
blank in the matrix chuck, involves only the pressing backwards of the two
springs 4, 5. As soon as a fresh matrix blank is inserted the said springs
extend and press it into its theoretically correct position up against two surfaces
equally true namely the bottom faces of the two abutments y3 y40, and the right
hand face of the abutment y39. The open end of the groove yus is closed by a screw
plug y67.
The proper fit of the front and rear pieces y, y, of the magazine chuck up
to the blanks 31 in spite of the varying thicknesses of the latter, is effected by
the rectilinear motion of the piece y up to the back piece y33 along the slots y,
as already described. To further accommodate varying thicknesses of matrix
blanks y, either front piece y or rear piece 33 of the magazine chuck, may be
fitted with spring seated and spring protruded packing studs y adapted to bear
upon the respective side faces of the blanks y, as illustrated in Figures 5 and 6,
in which y is a recess at right angles with the face of the respective piece, y
or y as the case may be, and 80, a spiral spring supported in the recess y81 by
having one end of it 82 made fast to the bottom of the recess as shown in Figure 5.
The opposite end of the spring so has the stud y48 fast on it. The stud 8 is of
such a size that it will move back into the recess 781 before pressure applied to
its outer face. The spring y is compressible in the recess y81 and is long enough
to hold the outer face of the stud y4s projecting beyond the said piece y or y33 60
long as no pressure is applied to the said stud. The spring protruded studs 48
just described may be replaced by a spring packing plate. This is illustrated in
Figures 7 and 8. It consists of a steel bar having vertical grooves leaving
vertical projecting bands 50. These bands have vertical grooves y³ and per-
forations extending through them from one edge to the other, in virtue of
which they possess a sufficient degree of resilience. The packing plate stands in
the magazine chuck in front of the row of matrix blanks y3 with its grooved
and perforated bands 0 bearing upon them and the front piece y of the said
chuck, respectively, as clearly shown in Figure 7.
The front piece of the magazine chuck may be dispensed with, in which
case the front jaw of the vice next described bears directly upon the blanks y, as
illustrated in Figure 4, and for the two lugs y of the back piece 33, there is
substituted a single piece y364 extending the whole length of the said piece y³.
This single piece has no slot ys and no pivots y.
As already explained, the vice in which the improved magazine chuck is held,
is of the well known instantaneous grip type. The construction of it is clearly
illustrated in Figures 1 to 4, more especially in Figures 3 and 4. Thus, y84 is its
base; y, the back jaw held fast thereto by screws 85, 5; 55, the front jaw
capable of a sliding motion upon the base to and from the back jaw y³ in a
transverse double V-groove formed by a pair of strips 86, 86, held on the base y
by screws 87, 87; 88, the rack piece fast on the back jaw y54; 89, the spindle
turning in front and back bearings in the bottom portion of the front jaw y5;
y, a cam pinned fast on the spindle y; 1, a second cam facing the cam y, loose

page_text: on the spindle y89 and connected by a vertical double V-groove to the bridge
piece which straddles the spindle ; y, a rack on the top of the bridge
piece 3 y, a cam fast on the spindle y8 and adapted to raise the bridge
piece to engage its rack y with the rack piece 788 on the back jaw y; y, a
spiral spring surrounding the spindle and resilient between the bridge piece y
and the front jaw y;, the spindle knob bearing against the front jaw yand
held fast to the spindle y by a pin ys; and y, a chamber in the front bottom
portion of the front jawy to receive the cams 700, 71, 78, bridge piece y and
spring. The rise of the cams 90, y", is not less than the closing motion of the
jaw 55
According to the present invention, the top of the back jaw y has a forward
continuation y which projects to the front far enough to overhang the improved
magazine chuck when the latter is gripped in the vice. The under surface y³ of
the continuation 53 serves as an abutment for the top of the magazine chuck to
bear against, as shown in Figures 3, 4 and 14. As both the said under surface 83
and the top of the magazine chuck are parallel with each other, the bearing of the
latter against the former, provides for the top edges y³ of the matrix blanks y
being held in the theoretically proper plane. The inner face of the front jaw y55
of the vice, and the outer face of the front piece 7 of the magazine chuck, are
both practically vertical and parallel with each other, but the outer face of the
back piece of the said chuck and the respective face of the back jaw y are
both inclined to the front at the same angle and are parallel with each other, as
shown in Figures 3, 4 and 14.
The bottom faces of the two lugs y, y, or the bottom face of the single
piece described above as made use of when the magazine chuck has no front
piece y, are declined from the front as illustrated respectively in Figures 3 and 4.
The opposite face of the bottom portion of the front jaw y55 is likewise declined from
the front at the same angle, and the magazine chuck rests upon it. The said opposite
face may be either a plane surface 56 as indicated in Figure 14 or a pair of
ridges 56 as shown in Figures 3 and 4. The plane of contact between the magazine
chuck and the bottom jaw is at an angle of about 45° with the horizontal, and
the plane of contact between the back jaw y and the magazine chuck meets the
plane just mentioned at an acute angle along a line behind and beneath the bottom
of the magazine chuck, so that the closing of the front jaw 5 of the vice upon the
said chuck, forces it backwards against the front face of the back jaw y and
upwards against the surface y, described above, and makes it meet the said
front face and surface 783 respectively at the same moment, the relative positions
of the parts being adjusted accordingly.
The forward continuation 3 of the back jaw ys of the vice and the top of the
magazine chuck are both cut away laterally as shown at 65 and 66, respectively,
-see Figures 1, 2, 3, 4 and 9-to expose as much of the top edges y of the
matrix blanks y as may be necessary to meet variations in the positions of the
formative cavities lengthwise of those edges.
There is a groove y" for oil in the top of the back jaw of the vice, and
suitable conduits y8 lead from it to each exposed portion of the edges y' of the
matrix blanks, so that the supplies of oil to all the cutters shall be constant and
equal.
The mouth of the vice is one side of it, because of the overhanging continua-
tion y already described and a fixed abutment on the other side of it. This
abutment is fixed to the back jaw 54-see Figures 1 and 2. The position of this
abutment 59 is such that it corresponds with a known position of the matrix
blanks in the magazine chuck with reference to the respective cutters of the
engraving machine above mentioned. In that machine, the pattern holder has
not any horizontal motion, only a vertical one to and from the tracer rod. There-
fore when the magazine chuck is up to the abutment, a certain point in some
exposed portion of an edge y³ corresponds with the centre of the pattern. If the
magazine chuck always fits home in the vice to one position, the centres of al!

page_text: the formative cavities will coincide with the centre of that pattern. NOW It
sometimes happens that there is a demand for a fount of matrices having the
centres of their formative cavities farther along the edges y³. To meet such a
demand, there is provided a series of trued filling pieces 60, adapted to stand up
against the said abutment y" and to hold the matrix blanks 31 as much to one
side of their normal position as is necessary to get the formative cavities cut in the
desired positions relatively to the top ends-the ends opposite the feet in linotype
matrices or (in other words) relatively to the hanging line. Each filling piece
is held in position by a shank 100 fast to it and passed through a hole in the
abutment y, and a nut yll screwed from the outside of the abutment y on to
the screw threaded and projecting end of the shank y100, as shown in Figures 1
and 2. This series of filling pieces is preferred to any micrometer screw gear
as being simpler and less likely to mislead the operator when he is in doubt as to
the cause of any inaccuracy in the position of the formative cavities, for there may
be some doubt about either the position or the action of a micrometer screw, but there
cannot be any as to the presence between the abutment and the magazine, of a
certain filling piece.
3 is a spindle turning in bearings 102 in each side of the back jaw y as
shown in the dotted lines in Figures 1 and 2, and more clearly by full lines in
Figures 3, 4 and 15. Both ends of the said spindle y project beyond the back
jawy. The end that projects past the open side of the vice, i.e., the one through
which the magazine chuck is slid in, has a finger y fast to it and projecting
from it at a right angle far enough to bear fairly upon and across the adjacent
end of the magazine chuck. The opposite end of the spindle 763 has a finger
lever fast upon it, to turn it with. yo is a spiral spring surrounding the
spindle y, lying within a bore 105 in the jaw and compressed between an
abutment 103, part of the back jaw y, and a collar y fast on the said
spindle The spindle 763 is longer than the back jaw y in order that the
spring may always be able by pushing up against the collar 104 to pull
the finger up to the magazine chuck with strength enough to hold it steady
against the abutment y or the filling piece y as the case may be.
The improved vice and magazine chuck made as above described are used as
follows. The magazine chuck is taken out of the vice and the proper filling
piece yo, unless the magazine chuck is to fit up to the abutment y59, fixed to the
latter. The chuck is then opened and charged by a matrix blank being
pressed into the back piece y between each pair of abutments y, 40 and the
opposite finger and between each abutment and the respective slider y46.
The front piece 32 is then closed upon the series of matrix blanks y, the holes 110
clearing the noses of the fingers ¹. If there is no front piece to the chuck
it is always open and therefore requires neither opening nor shutting. The finger
lever is next swung up or down to move the finger y61 from before the vice
mouth above described, and the magazine chuck pushed through the vice mouth
into the vice up to the abutment or to the filling piece 60. The spindle y³ is
next pushed to the right for the finger y to clear the magazine chuck, and
rocked by the finger lever until the said finger y6l stands across, and is pulled
upon, the magazine chuck, as illustrated in Figures 2 and 14. The vice
is closed upon the magazine chuck by turning the spindle y89 in the right direction
by the knob. As the said spindle 89 is so turned, the cam 5 makes the rack y
engage with the rack piece 88 fast on the stationary back jaw and the
cam (fast to the spindle y) is moved over the opposite one y¹ and is pushed
backwards, thereby pulling the knob 7 and making it push the front jaw y55
up to the magazine chuck until the latter cannot be moved any farther. As the
front jaw y is moved towards the back one y, the decline y forces the magazine
chuck upwards until the top of it bears against the surface y³.
When the lever has been pulled down into the position illustrated in
Figure 2, the arm y6l is opposite the adjacent end of the magazine chuck as shown
in Figures 2 and 14, and is caused to push the said chuck up to the abutment y5,

page_text: or to the filling piece 60 as the case may be, by a spiral spring y surrounding
the rod and resilient between the back jaw y and a collar 7104 fast on the
said rod y63 as shown in Figures 2 and 15.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
wo claim is:--
1. The herein before described combination of front piece; back piece; abut-
ments; holding-up and pressing springs; constituting the improved magazine
chuck.
2. The herein before described combination of magazine chuck and vice jaws,
whereby the closure of the latter upon the former forces it backwards and upwards
against the back jaw of the said vice adapted to receive it.
3. The hereinbefore described combination with magazine chuck consisting
of back piece, abutments, holding-up and pressing springs; of vice jaws the closure
of which upon the magazine chuck forces it backwards and upwaras against the
back jaw adapted to receive it.
4. The hereinbefore described combination of vice jaws open at one end and
having an abutment at the other; magazine chuck adapted to fit between the said
jaws and up to the said abutment; provision for varying the position of the
magazine with reference to the cutters consisting of spaces in the top of the
magazine chuck and in the over-hanging portion of the vice jaw; a series of
trued filling pieces; and mechanism as set forth for holding the magazine in the
selected position in the vice.
Dated the 4th day of August 1800
CHAS. S. WOODROFFE, Fel. Ch. Inst. P.A.,
188, Fleet Street, E.C., Agent for the Applicants.