Improvements in or relating to Punch and Matrix Making, Die Cutting, and Engraving Machinery, and Means for Grinding Tools for use therein.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Punch and Matrix Making, Die
Cutting, and Engraving Machinery, and Means for Grinding
Tools for use therein.
I, NICHOLAS DEDRICK, of Monitowoc, Wisconsin, in the United States of
America, Mechanical Engineer, do hereby declare the nature of this invention to
bo as follows:-
-
This invention relates to machinery for punch and matrix making, die cutting
and general engraving and it consists more especially in improvements upon or
applicable to such machinery, as described in the Specification of my former
application for Patent No. 5385 of 1898, and in additional features applicable
to or for use with various parts of the combination that I have utilized in the
machine described in the said specification.
To better illustrate my improvements I have reproduced in the annexed draw-
ings a considerable portion of the machine previously patented to me as aforesaid,
but with the substitution or addition of the improvements hereinafter more par-
ticularly referred to.
In the drawings:-Fig. 1 is a plan view of the improved machine. Fig. 2 is
an elevation thereof. Fig. 3 is a plan view of a rotary work table, the left half
as seen from above, the right half as seen from below. Fig. 4 is a similar view
of a rotary pattern table. Fig. 5 shows the mechanism immediately below the
work and pattern tables by which they are locked when at rest, or released and
turned a part turn separately or together. Fig. 6 is a cross section through the
work table and its support, on a larger scale. Fig. 7 is an elevation and Fig. 8
a plan view from below of the lever for releasing and turning the work table.
Fig. 9 is a plan view from below and Fig. 10 an elevation from the back of the
rod which may be engaged to connect the work table revolving mechanism to the
equivalent mechanism of the pattern table. Fig. 11 is a plan. Fig. 12 a side
elevation, Fig. 13 a cross section. Fig. 14 an end elevation and Fig. 15 a longi-
tudinal section of a matrix blank holder, Figs. 13 to 15 showing also part of
the work table to which it is adjustably attached. Figs. 16 to 20 are detail views
of parts thereof. Fig. 21 is a plan, and Figs. 22 and 22ª end and side elevations
of a punch blank holder adapted to be inserted in the matrix blank holder.
Fig. 23 is a plan and Fig. 24 an elevation of the movable end of the chip suction
chute Figs. 25, 26 27, 28 are detail views of parts which operate the end of the
suction chute. Fig. 29 is a side elevation of the tool head showing mounted
thereon the means for operating the end of the suction chute. Fig. 30 is a front
elevation and Fig. 31 a plan of the grinder on a larger scale. Fig. 32 is a plan
on a yet larger scale of the lower part thereof. Fig. 33 is a section on line 33-33
in Fig. 32. Fig. 34 is a detail view. Fig. 35 is a nart elevation part section
broken across of the receiver for the tool holder to serve as a handle when dress-
ing the end of the tool to a square point. Figs. 36 and 37 illustrate a modifica-
tion of construction in the grinder.

page_text: One object of these improvements is to enable the machine to be more easily
adjusted for cutting or engraving either the matrices used in type casting
machines, or the punches used in these machines which prepare by impression,
matrices for stereotype casting without preventing the mechanism being changed
for engraving thin plates of various sizes when desired, and it is moreover in-
tended to enable several for instance four, of the blanks for such work to be
mounted simultaneously in the machine so that the cutters or patterns do not
need to be changed so often, since the aforesaid blanks can be consecutively
treated by the rough cutter before the latter is changed for further intermediate
or finishing cutters.
As an example the following is my improved means for mounting either four
matrices or four punches simultaneously on the machine; S is a plate made to
engage by means of the screws S¹ and slips S2 in the slots P6 of the plate P8.
On the plate S is an annular groove S³ to receive the ring S of the lever S and
another annular groove to receive the ball race S. Concentric with these grooves
is the king bolt $7 for the turntable S8 which turns between the ball bearings S
S10. On the turntable S8 are the dovetail slides S11 to receive the chucks. With
this rotary table S8 I may use a rotary pattern table. On the arm S12 is the an-
nular ball race S13 for the table S on which patterns may be fastened in the
same manner as thin plates are fastened on the work table $8. S15 is the king
bolt of table $14 and $16 a further ball bearing for preventing the table rising
on the king bolt. Surrounding the boss S₁ of the table S is the ring S18 of the
detent releasing arm S. This arm $19 is attached at S20 by a rod S21 to the
lever S5 of the work table, so that when the lever S5 is moved the arm $19 moves
with it. Both the rotary pattern table S and the rotary work table S8 have
notches SS engaged by dogs S2 $25 adapted to lock the tables in the working
position and before. turning the tables it is necessary to simultaneously press
back said dogs against their springs $26 S27 and for the purpose the slides S28 S29
are attached to the dogs S2 S25 by the screws $30 $31 engaging in elongated slots
in the dogs. These slides carry the studs SS against which the inclined
faces S3 S36 press when the parts S5 S₁ commence to turn so that the dogs are
pressed back simultaneously and are held pressed back by the circular faces S36
$37 while the lever S and the arm S1 and with them the tables make a quarter
turn. The ring S18 engages the table S by means of the spring dog S3 which
is bevelled to allow the table to revolve freely in one direction but to engage
it to cause it to revolve in the other direction when it engages one of the four
recesses $39 on the underside of the table. To afford a certain stiffness of revolu-
tion between the ring S18 and the table S14, the spring friction pads $40 in the table
press upon the ring $18.
After a quarter turn has been given to the table S the spring stop S4 engages
the same and prevents back revolution while the arm S is returning to its first
position to enable the stud S3 to return and the bevelled nose of the dog S25 to fall
into the bevelled recess S23 to accurately hold the table in its new position.
In the meantime the lever S will have turned the work table S8 by means of
its bevelled spring dog S4 engaging one of the recesses $43. The work table
having made a quarter revolution will be stopped by the spring stop S44 until
the return of the lever S5 permits the stud S to return and with it the dog $25
which locks the work table S8.
As it is convenient to allow the work table and the pattern table to be turned
independently one of the other I have adopted the following device which enables
them to be turned independently or together at will.
The rod Saforesaid is not attached directly to the lever S but it is formed
with a series of recesses $45 along its side and it passes through a sleeve S in
which is a bevelled dog S. This dog is usually pressed away from the rod $21
by a spring S and it has a notch S49 with an inclined face against which bears
the inclined face $50 of the pin S51 pressed downward by a spring S2. A. lever Sa
pivoted at $1 and suitably guided under the lever S5 may be lifted if desired;

page_text: by the same hand that turns the lever S³, and when it is so lifted it lifts, the
pin S which presses the dog S7 into engagement with one of the recesses S
of the rod S2 and so temporarily connects the rod S2 to move with the lever S5.
For carrying the matrix blank I use a holder shown in Figs. 11 to 20 similar
to that described in my aforesaid patent, but single instead of double. A bed R³
slides on the base, guided by a rib R and kept snug by a gib R5. This bed
has a bridge plate R6 separating two channels whose forward walls are open
between said bridge plate and corner posts R7, which are connected by a top
bar R8. The rear wall has a top flange R overhanging the chambers. Travel-
lers Rare guided longitudinally by engagement in channels in the bottom of
the chambers, and are actuated longitudinally therein by screws R" set through
plates at the ends of the carriage. A vertical threaded stem R12 of each traveller
carries a sleeve R13 (Fig. 17) on which a jaw R is journalled and stopped verti-
cally by the flange R on the sleeve R13 being stopped against the rotation on
the sleeve by the sides of the chamber, whereby the rotation of the sleeve on the
threaded stem adjusts the jaw vertically without rotating it. The aws are rabbet-
ted at R and have horizontally pivoted cheek levers R on and against whose
fingers R18 and R₁ the blanks lodge, the pivot of the cheek levers being below
and rearward from both the fingers. A blank when at Z Fig. 15 long enough to
engage under the bar R8 and under the flange R, being lodged on the finger R18
leans against the finger R and as the jaw is advanced to bring the face of the
blank against the bridge R6 the finger R being pushed back, the finger R18 is
tilted up and carries the blank up snugly against the bar and flange at the top,
so that it is gauged by its top face which is to be cut and by its vertical face
against the bridge or against the stop screw R20 therein.
So far the construction does not differ from that of my former patent but to
more effectually hold up that edge of the blank which is near the bridge Re
especially for wider blanks, it is preferable to arrange a cam R28 in one piece
with a worm wheel R29 occupying a cavity R. in the wall of the bridge R. The
said wall is also pierced as at R with a cylindrical shouldered passage to receive
the shouldered spindle R of the worm R to operate the worm wheel R when
the spindle is revolved by the milled head R³ so as to bring the cam upward
under the blank % and hold it firmly in place.
The punch blank holders which may also be used with the double matrix holder
of my previous patent comprises a frame R with suitable clamping screws R36
by which a block such as I may be caused to hold the punch blank Z By
turning the screw R" so as to move the block R backward from the bridge R
space is afforded to insert the punch holder R in the matrix holder. It has a
shoulder R to engage the fingers R18 of the plates R and another shoulder R38
for its support on the cam R28.
A further object of the present improvements is to enable the lifting of the
tracer (to free it from the pattern) which movement causes also the tool to be
lifted from the work) to move the chute which sucks up the chips so as to cause
it to also move away from the work to enable the latter to be changed when
the pattern is changed, as for example when the work table is turned."
In order to simultaneously move away the end of the chip receiving chute
when the tool is raised the end Zu of this chute Z10 (which leads to an exhaust
fan not shown) is made to slide and is adapted to be drawn in by a spring Z¹³.
It is however usually kept in place with its recessed orifice concentric with the
tool by means of the pin Z3 on the lever Z which pin engages in the hook Z15
on the side of the part 7" and is held therein by a spring catch Z16 having a
handle Z by which it may be moved to release the lever if required. The lever Z¹+
is mounted on a rotary spindle Z18 which is connected by an extensible ball and
socket jointed rod Z to the arm W. This spindle 18 has a helicoidal slot Z20
and slides in a casing Z having a pin engaging in said slot Z20. When therefore
the spindle is lifted by the lever W, its helicoidal slot causes it to be revolved a
quarter turn and simultaneously moves the lever Z which turns the chute Z10

page_text: on its pivotal connection Z. The return of the lever W causes, by reversal of
above motions, the return of the chute end Z" to place.
Many features of the construction of the tool head in my aforesaid patent were
adapted to facilitate grinding the tool in such manner as to ensure that the tool
center coincides with the axis of its rotation. For this purpose the long holder V17
which grips the tool at the lower end by the same means by which the holder
itself is centered and which has means Vs for holding the tool at the upper end
when the holder is withdrawn is especially efficient.
The following is a description of grinding mechanism suitable for receiving
the aforesaid tool holder.
The grinding machine to take these tool holders is shown in Figs 30 to
34. It comprises a base plate U with slots U₁ by which it may be secured
by screws U to the table of the engraving machine. On the plate U
the plate U is movable back and forth on guides U The plate U³
has a lug in which a screw spindle U turns. The spindle engages
in a screw threaded hole in the plate U and in the nut U8 which is
pressed by a spring U to take up wear and keep the screw tight in the threads
of hole U. On the screw U there is a collar U10 against which the spring U
presses the other end of said spring having bearing in the lug U³. On the end
of the screw spindle U there loosely fits a sleeve U carrying a roller U³. On
the end of sleeve U a screw U14 is screwed to bear against the end of spindle U₁.
In a groove on the plate U3 the plate U is adjustable to and fro. Its lug U16
embraces a screw U projecting laterally from plate U³ and is adjustably held
by the two nuts U18 U19.
On the plate U³ a plate U20 slides to and fro on the guides U¹. On this
plate U20 is pivoted the lever U having a pin U23 passing through a slot U24
in said plate U20 and engaging a slot U in plate U. The plate U20 has an
arm U26 in which a slide is adjustable, the same carrying on its under side
a template U28 bearing against the roller U13 before mentioned.
It is obvious that by moving the lever U2 to and fro it moves the plate Uz
to and fro and also causes the template U8 to move on the roller UB which
causes the plate U³ to be moved back and forth, so that the joint movement gives
to any point on plate U20 a course similar to the shape of the template U28.
The plate U20 carries the pillar U29 on which is secured the prismatic arm U
on which slides the holder U³ in which the spindle U is journalled. This
spindle receives the tool holder V17 before mentioned and has a screw thread
at U to receive the cap V24 which goes with the holder so that the holder is
secured in the spindle U in exactly the same way as in the tool chuck of the
engraving machine.
To turn the spindle U2 from time to time in order to bring a new face of the
tool to bear against the grindstone U there are arranged on the spindle U
two rings U3 U36 of which one is fixed and the other movable; each has, for
example, two series of recesses U one set being arranged at distances of 90°
from each other, the other set at 1200. The two sets on one ring are differently
spaced from the two sets on the other ring, set from set, that is to say so that
when one set in the movable ring is made to coincide with the corresponding
set in the other ring, the other two corresponding sets are not in coincidence,
and the spring detent U can only engage the coinciding sets and so hold the
spindle in successive positions for grinding; in the example given, three or four
faces of the tool.
For accurately setting the length of the tool a pivoted latch U is provided
with a screw U40 against which the end of the tool may be brought to bear.
The whole of parts U20 U31 U2 turn together on the pillar U for convenience
of manipulation but to ensure their return to the same grinding position an
adjustable stop is provided on the plate U20.
A further adjustable stop U42 is also provided on plate U to limit the move-
ment of the lever U and consequently the feed of tool to the grinding wheel..

page_text: The grinding wheel is encased for the most part in a hood U43 forming the
entrance to a chute U for drawing off the filings by an exhaust fan.
is
If it is desired to cut the tool excentrically with more or less excentricity this
can be done by use of a spindle as shown in Fig. 36 in which the part
excentric and fits in an excentrically bored sleeve U mounted in the head U³.
By turning one part U with regard to the other part U the combined excen-
tricity of the two parts may be equal to any number between the sum and the
difference of the excentricities of the two parts, that is to say, from 2 to zero
the excentricity of such part being equal to one. The resultant excentricity is
that of the tool axis with regard to the axis of the socket in head U31 and is equal
therefore to the excentricity of cut of the tool.
Fig. 35 shows partly in elevation partly in longitudinal section a device for
receiving the tool holder beforementioned when it is desired to dress the end
of the tool to a flat surface perpendicularly to the axis of the tool.
For this purpose the sleeve U is made with a cavity of a length sufficient to
receive the tool holder which is secured therein by its own screw threaded cap
screwed upon the end Us of sleeve U47. The tapered part U49 centres the tool
holder, and the adjustable sleeve U which screws upon the end of sleeve U47
and has a Hat flange U perpendicular to the axis of the sleeve U may be screwed
more or less thereon in order to leave more or less of the tool G projecting beyond
the face of the flange U so that such projecting part may be filed or ground
away, during which operation the flange U³ serves both as a gauge and a guide.
Dated this 9th day of December 1898.
HERBERT HADDAN & Co.,
Agents to Applicant,
Improvements in or relating to Punch and Matrix Making, Die
Cutting, and Engraving Machinery, and Meaus for Grinding
Tools for use therein.
I, NICHOLAS DEDRICK, of Monitowoc, Wisconsin, in the United States of
America, Mechanical Engineer, 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:-
This invention relates to machinery for punch and matrix making, die cutting
and general engraving and it consists more especially in improvements upon or
applicable to such machinery, as described in the Specification of my former
application for Patent No. 5385 of 4 March 1898 and in additional features appli-
cable to or for use with various parts of the combination that I have utilized in
the machine described in the said specification.
To better illustrate my improvements I have reproduced in the drawings left
with my Provisional Specification a considerable portion of the machine pre-
viously patented to me as aforesaid, but with the substitution or addition of the
improvements hereinafter more particularly referred to.
In the drawings:-Fig. 1 is a plan view of the improved machine. Fig. 2 is
an elevation thereof. Fig. 3 is a plan view of a rotary work table, the left half
as seen from above, the right half as seen from below. Fig. 4 is a similar view
of a rotary pattern table. Fig. 5 shows the mechanism immediately below the
work and pattern tables by which they are locked when at rest, or released and
turned a part turn separately or together. Fig. 6 is a cross section through the

page_text: work table and its support, on a larger scale. Fig. 7 is an elevation and Fig. 8
a plan view from below of the lever for releasing and turning the work table.
Fig. 9 is a plan view from below and Fig. 10 an elevation from the back of the
rod which may be engaged to connect the work table revolving mechanism to the
equivalent mechanism of the pattern table. Fig. 11 is a plan. Fig. 12 a side
elevation; Fig. 13 a cross section; Fig. 14 an end elevation, and Fig. 15 a longi-
tudinal section of a matrix blank holder; Figs. 13 to 15 showing also part of
the work table to which it is adjustably attached. Figs. 16 to 20 are detail views
of parts thereof. Fig. 21 is a plan, and Figs. 22 and 22" end and side elevations
of a punch blank holder adapted to be inserted in the matrix blank holder.
Fig. 3 is a plan and Fig. 24 an elevation of the movable end of the chip suction
chute. Figs. 25, 26, 27, 28 are detail views of parts which operate the end of the
suction chute. Fig. 29 is a side elevation of the tool head showing mounted
thereon the means for operating the end of the suction chute. Fig. 30 is a front
elevation and Fig. 31 a plan of the grinder on a larger scale. Fig. 32 is a plan
on a yet larger scale of the lower part thereof. Fig. 33 is a section on line 3333
in Fig. 32. Fig. 34 is a detail view. Fig. 35 is a part elevation part section
broken across, of the receiver for the tool holder to serve as a handle when dress-
ing the end of the tool to a square point. Figs. 36 and 37 illustrate a modifica-
tion of construction in the grinder.
One object of these improvements is to enable the machine to be more easily
adjusted for cutting or engraving either the matrices used in type casting
machines, or the punches used in those machines which prepare by impression,
matrices for stereotype casting without preventing the mechanism being changed
for engraving thin plates of various sizes when desired, and it is moreover in-
tended to enable several for instance four, of the blanks for such work to be
mounted simultaneously in the machine so that the cutters or patterns do not
need to be changed so often, since the aforesaid blanks can be consecutively
treated by the rough cutter before the latter is changed for further intermediate
or finishing cutters.
As an example the following is my improved means for mounting either four
matrices or four punches simultaneously on the machine; S is a plate made to
engage by means of the screws S¹ and slips S2 in the slots P6 of the plate P³.
On the plate S is an annular groove S³ to receive the ring S4 of the lever S and
another annular groove to receive the ball race S6. Concentric with these grooves
is the king bolt S for the turntable S8 which turns between the ball bearings S
S10. On the turntable S8 are the dovetail slides S to receive the chucks. With
this rotary table S8 I may use a rotary pattern table. On the arm S12 is the an-
nular ball race S¹³ for the table S14 on which patterns may be fastened in the
same manner as thin plates are fastened on the work table S8. S15 is the king
bolt of table S1 and S16 a further ball bearing for preventing the table rising
on the king bolt. Surrounding the boss S7 of the table S14 is the ring S18 of the
detent releasing arm S. This arm $19 is attached at $20 by a rod S21 to the
lever S of the work table, so that when the lever S5 is moved the arm S19 movés
with it. Both the rotary pattern table S¹14 and the rotary work table S8 have
notches SS23 engaged by dogs S24 S25 adapted to lock the tables in the working
position and before turning the tables it is necessary to simultaneously press
back said dogs against their springs S26 S27 and for the purpose the slides S28 S29
are attached to the dogs S24 S2 by the screws $30 $31 engaging in elongated slots
in the dogs. These slides carry the studs S2 S3 against which the inclined
faces S S press when the parts S5 S19 commence to turn so that the dogs are
pressed back simultaneously and are held pressed back by the circular faces S36
Sawhile the lever S and the arm S" and with them the tables make a quarter
turn. The ring S18 engages the table S14 by means of the spring dog S3 which
is bevelled to allow the table to revolve freely in one direction but to engage
it to cause it to revolve in the other direction when it engages one of the four

page_text: recesses $39 on the underside of the table. To afford a certain stiffness of revolu-
tion between the ring S18 and the table S, the spring friction pads S40 in the table
press upon the ring S18.
After a quarter turn has been given to the table S¼ the spring stop S engages
the same and prevents back revolution while the arm S19 is returning to its first
position to enable the stud S to return and the bevelled nose of the dog §25 to fall
into the bevelled recess S23 to accurately hold the table in its new position.
In the meantime the lever S5 will have turned the work table S8 by means of
its bevelled spring dog S4 engaging one of the recesses S43. The work table
having made a quarter revolution will be stopped by the spring stop S4 until
the return of the lever S permits the stud S to return and with it the dog S25
which locks the work table S8.
As it is convenient to allow the work table and the pattern table to be turned
independently one of the other I have adopted the following device which enables
them to be turned independently or together at will.
The rod S21 aforesaid is not attached directly to the lever S but it is formed
with a series of recesses S along its side and it passes through a sleeve S46 in
which is a bevelled dog S4. This dog is usually pressed away from the rod S
by a spring S18 and it has a notch S with an inclined face against which bears
the inclined face S0 of the pin S51 pressed downward by a spring S52. A lever S5³
pivoted at S and suitably guided under the lever S may be lifted if desired,
by the same hand that turns the lever S5, and when it is so lifted it lifts the
pin S5 which presses the dog S7 into engagement with one of the recesses $45
of the rod S21 and so temporarily connects the rod S21 to move with the lever S³.
For carrying the matrix blank I use a holder shown in Figs. 11 to 20 similar
to that described in my aforesaid patent, but single instead of double. A bed R³
slides on the base, guided by a rib R4 and kept snug by a gib R. This bed
has a bridge plate R6 separating two channels whose forward walls are open
between said bridge plate and corner posts R7, which are connected by a top
bar Rs. The rear wall has a top flange R9 overhanging the chambers. Travel-
lers R10 are guided longitudinally by engagement in channels in the bottom of
the chambers, and are actuated longitudinally therein by screws R1 set through
plates at the ends of the carriage. A vertical threaded stem R1 of each traveller
carries a sleeve R¹³ Fig. 17 on which a jaw R is journalled and stopped verti-
cally by the flange R5 on the sleeve R¹³ being stopped against the rotation on
the sleeve by the sides of the chamber, whereby the rotation of the sleeve on the
threaded stem adjusts the jaw vertically without rotating it. The jaws are rabet-
ted at R16 and have horizontally pivoted cheek levers R7 on and against whose
fingers R18 and R19 the blanks lodge, the pivot of the cheek levers being below
and rearward from both the fingers. A blank when at Z Fig. 15 long enough to
engage under the bar R8 and under the flange R', being lodged on the finger R18
leans against the finger K9 and as the jaw is advanced to bring the face of the
blank against the bridge R6 the finger R19 being pushed back, the finger R18 is
tilted up and carries the blank up snugly against the bar and flange at the top,
so that it is gauged by its top face which is to be cut and by its vertical face
against the bridge or against the stop screw R20 therein.
So far the construction does not differ from that of my former patent but to
more effectually hold up that edge of the blank which is near the bridge R6
especially for wider blanks, it is preferable to arrange a cam R28 in one piece
with a worm wheel R2 occupying a cavity R30 in the wall of the bridge R6. The
said wall is also pierced as at R31 with a evlindrical shouldered passage to receive
the shouldered spindle R of the worm R to operate the worm wheel R29 when
the spindle is revolved by the milled head R so as to bring the cam upward
under the blank Z and hold it firmly in place.
The punch blank holders which may also be used with the double matrix holder
of my previous patent comprises a frame R35 with suitable clamping screws R.36

page_text: by which a block such as R37 may be caused to hold the punch blank . By
turning the screw R so as to move the block R14 backward from the bridge R6
space is afforded to insert the punch holder R in the matrix holder. It has a
shoulder R to engage the fingers R18 of the plates R and another shoulder R.38
for its support on the cam R28
A further object of the present improvements is to enable the lifting of the
tracer (to free it from the pattern which movement causes also the tool to be
lifted from the work) to move the chute which sucks up the chips so as to cause
it to also move away from the work to enable the latter to be changed when
the pattern is changed, as for example when the work table is turned.
In order to simultaneously move away the end of the chip receiving chute
when the tool is raised the end Z of this chute Z10 (which leads to an exhaust
fan not shown) is made to slide and is adapted to be drawn in by a spring Z¹³.
It is however usually kept in place with its recessed orifice concentric with the
tool by means of the pin Z3 on the lever 7 which pin engages in the hook Z15
on the side of the part 7 and is held therein by a spring catch Z16 having a
handle Z by which it may be moved to release the lever if required. The lever Z14
is mounted on a rotary spindle Z18 which is connected by an extensible ball and
socket jointed rod Z¹ to the arm W. This spindle 718 has a helicoidal slot Z20
and slides in a casing 721 having a pin engaging in said slot Z20. When therefore
the spindle is lifted by the lever W, its helicoidal slot causes it to be revolved a
quarter turn and simultaneously moves the lever Z14 which turns the chute Z10
on its pivotal connection 222. The return of the lever W causes, by reversal of
above motions, the return of the chute end Z to place.
The means by which the lever W is operated consists of levers forked to engage
the tool chuck and tracer holder respectively and two cylinders with pistons so
connected to said levers respectively that the lifting of one of the levers depresses
one of the pistons and causes liquid to flow through a tube from the one cylinder
to the other cylinder to raise the piston therein which raises the other lever.
This means for operating the lever W is described in the specification of my
former patent herein before referred to, and is not claimed herein except in con-
junction or combination with the chip chute and its mechanism.
Many features of the construction of the tool head in my aforesaid patent were
adapted to facilitate grinding the tool in such manner as to ensure that the tool
centre coincides with the axis of its rotation. For this purpose the long holder V17
which grips the tool at the lower end by the same means by which the holder
itself is centred and which has means V25 for holding the tool at the upper end
when the holder is withdrawn, is especially efficient.
The following is a description of grinding mechanism suitable for receiving
the aforesaid tool holder.
The grinding machine to take these tool holders is shown in Figs 30 to
34. It comprises a base plate U with slots U¹ by which it may be secured
by screws U to the table of the engraving machine. On the plate U
the plate U³ is movable back and forth on guides U³.
The plate U³ has a lug, U in which a screw spindle U turns. The spindle
engages in a screw threaded hole U7 in the plate U and in the nut Us which is
pressed by a spring U to take up wear and keep the screw tight in the threads
of hole U. On the screw U there is a collar U10 against which the spring Ul
presses the other end of said spring having bearing in the lug U³. On the end
of the screw spindle U6 there loosely fits a sleeve U12 carrying a roller U¹³. On
the end of sleeve U a screw 14 is screwed to bear against the end of spindle U⚫.
In a groove on the plate U³ the plate U is adjustable to and fro. Its lug U16
embraces a screw U17 projecting laterally from plate U³ and is adjustably held
by the two nuts U18 U19
On the plate U a plate U20 slides to
plate 20 is pivoted the lever U2 having
in said plate U20 and engaging a slot. U
and fro on the guides U On this
a pin U23 passing through a slot U24
in plate U15 The plate U2⁰ has an

page_text: arm U26 in which a slide U27 is adjustable, the same carrying on its under side
a template U bearing against the roller U13 before mentioned.
It is obvious that by moving the lever U to and fro it moves the plate U20
to and fro and also causes the template U28 to move on the roller 3 which
causes the plate U³ to be moved back and forth, so that the joint movement gives
to any point on plate U20 a course similar to the shape of the template U28.
The plate U20 carries the pillar U29 on which is secured the prismatic arm U30
on which slides the holder U in which the spindle U is journalled. This
spindle receives the tool holder V17 before mentioned and has a screw thread
at U to receive the cap V2 which goes with the holder so that the holder is
secured in the spindle Û in exactly the same way as in the tool chuck of the
engraving machine.
To turn the spindle U from time to time in order to bring a new face of the
tool to bear against the grindstone U there are arranged on the spindle U³
two rings US U36 of which one is fixed and the other movable; each has, for
example, two series of recesses U one set being arranged at distances of 90°
from each other, the other set at 120°. The two sets on one ring are differently
spaced from the two sets on the other ring, set from set, that is to say so that
when one set in the movable ring is made to coincide with the corresponding
set in the other ring, the other two corresponding sets are not in coincidence,
and the spring detent U8 can only engage the coinciding sets and so hold the
spindle in successive positions for grinding; in the example given, three or four
faces of the tool.
For accurately setting the length of the tool a pivoted latch U39 is provided
with a screw U against which the end of the tool may be brought to bear.
The whole of parts U20 U31 U32 turn together on the pillar U³ for convenience
of manipulation but to ensure their return to the same grinding position an
adjustable stop is provided on the plate U20.
A further adjustable stop U is also provided on plate C to limit the move-
ment of the lever U22 and consequently the feed of tool to the grinding wheel.
The grinding wheel is encased for the most part in a hood forming the
entrance to a chute U for drawing off the filings of an exhaust fan.
If it is desired to cut the tool eccentrically with more or less excentricity this
can be done by use of a spindle as shown in Fig. 36 in which the part U is
excentric and fits in an excentrically bored sleeve U mounted in the head U
By turning one part U with regard to the other part. U the combined excen-
tricity of the two parts may be equal to any number between the sum and the
difference of the excentricities of the two parts, that is to say, from 2 to zero
the excentricity of such part being equal to one. The resultant excentricity is
that of the tool axis with regard to the axis of the socket in head U and is equal
therefore to the excentricity of cut of the tool.
Fig. 35 shows partly in elevation, partly in longitudinal section a device for
receiving the tool holder before mentioned when it is desired to dress the end
of the tool to a flat surface perpendicularly to the axis of the tool.
For this purpose the sleeve U is made with a cavity of a length sufficient to
receive the tool holder which is secured therein by its own screw threaded cap
screwed upon the end Us of sleeve U. The tapered part U49 centres the tool
holder, and the adjustable sleeve U which screws upon the end of sleeve U
and has a flat flange U perpendicular to the axis of the sleeve U7 may be screwed
more or less thereon in order to leave more or less of the tool G projecting beyond
the face of the flange U so that such projecting part may be filed or ground
away, during which operation the flange serves both as a gauge and a guide.
Having now particularly described and ascertained the nature of my invention
and in what manner the same is to be performed, I declare that what I claim is :-
In punch and matrix making, die cutting and engraving machinery, and means
for grinding tools for use therein.

page_text: 1. The arrangement of rotary work and pattern tables adapted to carry in a
corresponding manner a plurality, preferably four, of detachable work holders and
pattern holders respectively, the said tables having means for detachably con-
necting them together and detachably locking them in their respective working
positions so that a part rotation given to one of them may be simultaneously
and equally transmitted to the other unless the connecting mechanism is dis-
connected for the purposes set forth.
2. The construction of the table locking mechanisms and the table connection
disconnecting mechanism so that the former, and when desired also the latter,
may be adapted to be operated without removal of the operator's hand from the
handle of the table rotating mechanism, substantially as set forth.
3. In the device claimed in Claims 1 and 2 the rotary work table S8 with lock-
ing recesses and the dog S2 to engage the same the latter being released by
an incline $34 on the ring St of the lever S which turns the table, together with
a lever S under the lever S to cause engagement at will of a dog S7 of the
lever S to the rod S2 which communicates similar movement to the arm S1 which
similarly unlocks and revolves the rotary pattern table S¹.
4. The construction of rotary work and pattern tables and mechanism for rota-
ting, locking, releasing, connecting and disconnecting the same substantially as
hereinbefore described and illustrated in the drawings.
5. The combination with a rotary pattern table of the separate single matrix
blank holders herein described and illustrated.
6. The construction of matrix blank holder with cam R28 and means for lifting
and lowering the said cam substantially as and for the purpose set forth.
7. The construction substantially as herein described and illustrated of the
punch blank holder so that it is insertible in and co-operates with a matrix blank
holder to serve for holding a punch blank in place of a matrix blank.
8. In the device claimed in Claim 6 the construction of the punch blank holder
to be inserted and held inside the matrix blank holder the former consisting of
a frame R with clamping screws R36 and shoulders R29 and R to be upheld
by the fingers R18 and the cam R28 respectively.
9. The combination with the lifting tool head of a chip, chute connected thereto
so that the upward movement of the tool head for removal of the tool from the
work causes the mouth piece of the chip chute to be swung aside substantially
as and for the purpose set forth.
10. The device for enabling the tracer holder and the tool chuck of an engray-
ing machine to be lifted together and a chip receiving shoot to be simultaneously
moved away from the work, consisting of levers forked to engage the tool chuck
and tracer holder respectively, two cylinders with pistons so connected to said
levers respectively that the lifting of one of the levers depresses one of the pistons
and causes liquid to flow through a tube from the cylinder to the other cylinder
to raise the piston therein which raises the other lever, the same lever also lift-
ing a helicoidally slotted spindle which causes a lever to be rocked horizontally
to swing aside the pivoted end of the chip chute.
11. A grinder adapted to receive a tool holder such as V17 used for holding the
tool when in the tool head of the cutting, engraving or like machine so that the
tool may be ground and the tool holder replaced in the tool head without remov-
ing the tool from the tool holder or otherwise needing to alter its adjustment in
the tool holder.
12. With the device claimed in 8, the use of a grinder having a chuck adapted
to receive the same tool holder V7 with tool thereon and adapted to move said
chuck according to a template so that the tool is ground by a rotary grinding
wheel according to the form of the template.
13. In the grinder described in Claims 11 and 12, the use of two excentri-
cally turned parts in the tool chuck adapted to be turned to combine or to neu-
tralize their respective excentricities in order to cut the tool with adjustable
excentricity.

page_text: 14. The construction of the grinder substantially as herein described and illus-
trated in the drawings.
Dated this 9th day of October 1899.
HERBERT HADDAN & Co.,
Agents to Applicant,
18, Buckingham Street, Strand, London.