Improvements in Eccentric, Crank, Cam, or Toggle Joint Presses.
Year: 1892

page_text: Date of Application, 17th Aug., 1892
Complete Specification Left, 17th May, 1893-Accepted, 5th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in Eccentric, Crank, Cam, or Toggle Joint Presses.
DANIEL SMITH Junior Castle Works Raglan Street Wolverhampton Stafford-
shire Mechanical Engineer, do hereby declare the nature of this invention to be as
follows:-
:-
This invention applies to presses that usually consist of a slide made to
reciprocate between suitable guides by an eccentric, crank, cam or toggle joint
movement generally used for the purpose of cutting-out, pressing, drawing or
forging metal or other articles.
The object of this invention is to effect the following improvements in such
presses as mentioned in the title riz. First an improved stop motion giving great
solidity and ease of movement; Secondly combining the stop motion with two
methods of slide adjustments, such adjustments being made within the slide in order
that they may be effected while the crank etc. used to work the slide is in motion;
Thirdly the slide, stop motion and means of adjustment in combination with
the means of working the slide independently of the crank etc. used to work
the slide when cutting for the purpose of tool setting; Fourthly a means of
disengaging the stop notion and preventing two strokes of the slide by one
movement of the disengaging motion. The adjustment referred to is that of the
slide to suit tools of variable height, this in crank presses is usually effected by a
screw forming part of the connecting rod which it is practically impossible to adjust
while the rod is in motion.
I will first describe the stop motion. I intend to use in the slide apart from the
intended means of adjustment, on the lower end of the connecting rod and properly
jointed thereto I form a plunger preferably circular, this being capable of sliding
freely in a suitable recess formed within the slide. On the lower face of the
aforesaid plunger I form suitable projecting pieces, these also form corresponding
spaces say of a depth equal to the length of the stroke of the slide. On the bottom
of the recess within the slide I place a block preferably circular having projections
corresponding in position and height to and facing those on the lower face of the
plunger. This block if inade circular is capable of rotation so that when the slide
is wanted to descend, the block is partly rotated until the projections on the block
are under the projections on the plunger and as the latter descends the slide is
forced down. By further rotating or reversing the block until the spaces formed
within the projections on the block come under or correspond with the projections
on the plunger so that as the plunger descends the projections thereon engage
within the spaces formed on the block the slide does not descend but is retained at
the top of its stroke either by the friction between the slide and its guides or by
other convenient means. The lower block if circular I cause to rotate either by a
spring, rack and pinion or lever motion or wedge or screw so arranged as to be
operated by hand or treadle worked by the foot for giving the slide its down
stroke using the up stroke of the slide to disengage or partly rotate the lower
block and thereby cause the slide to remain at rest at the top of its stroke leaving
the tools open for the insertion of the metal or article to be cut out, made, or
operated upon previous to its next stroke. Between the hand lever or treadle
used to work the stop motion within the slide or in the case of a stop motion being
used in the wheel! use a wheel having projections on its periphery and by a pawl
engaging with such projections or a ratchet wheel connected thereto, each motion
of the treadle or hand lever will rotate the wheel a distance equal to about the
pitch of its projections and as the latter passes over a lever each projection or tooth

page_text: draws the disengaging lever out of its normal position for a short period of time,
while this is being done the stop motion block engages with the slide or wheel as
the case may be and causes the slide to make a stroke; but before the stroke is
completed the engaging lever has returned into its normal position and so prevents
the slide from making its second stroke, and as the treadle or hand lever returns
the pawl engages with the next notch or projection or teeth in the ratchet wheel
and is in position for the treadle or hand lever to give effect to its next stroke. In
order to effect the slide adjustment previously referred to I construct the stop
motion as previously described and insert it in a bush or cylindrical part, the lower
block resting within and on the bottom of such cylinder, and the plunger part
working therein. The outside of the cylinder is screwed, and the interior of the
slide is also screwed to receive it; such cylinder being free to rotate around the
stop motion and within the slide, such rotation causing the slide to vary its position
on the cylinder thereby giving the slide the vertical adjustment required. For tool-
setting purposes in order to let the slide remain at the bottom of its stroke I form
the cylinder containing the stop motion plain so that it can slide freely within the
slide, the interior of the slide is screwed and fitted with an annular out that serves to
prevent the stop motion cylinder from drawing out of the slide and by suitable
packing pieces being placed between the stop-motion cylinder and the slide I effect
the desired adjustment. The annular nut being screwed on to the stop-motion
cylinder thereby taking up all play and preventing back lash. The annular nut
can be unscrewed so as to extend the chamber within the slide in which reciprocates
the stop-motion cylinder, and when this is done to an extent equal to the travel of
the slide the latter will not be lifted but will remain at the bottom of its stroke.
By inserting the adjustments within the slide I can use the connecting rod for the
purpose of rising or falling the slide for tool-setting purposes. This I accomplish
by making the connecting rod telescopic, i.e. the upper part sliding or screwing
preferably within the lower and by a suitable catch or friction grip or quick
threaded screw I can break the connection between the parts and allow the slide to
remain at the bottom of its stroke while the crank and upper part of the rod is in
motion. In case of eccentric driven slides I effect the same downward liberation
of slide by introducing an eccentric, tumbler or sliding block between the inside
moving box or the boxes and the top of the slide, the movement of such eccentric
tumbler or sliding or rotating block creating a space for the slide to descend equal
to the stroke of the slide, such space allowing the slide to remain down while the
eccentric is in motion, and by a lever engaging into the slide on a suitable fulcrum,
or by forming a tooth rack on the slide and with a pinion gearing into same worked
by a lever or by a tooth rack being formed on the slide and another on the press
body at such a distance apart (but paralell with each other) as will admit of a
pinion gearing into each rack. The rotation of the pinion by a suitable hand lever
will cause the slide to work up and down without its being connected to or driven
by the eccentric, crank, cam or toggle joint working the slide, i.e. the tool-setter or
person working the press has complete control over the slide. He can rise it, fall
it, or retain it in any position without risk of accident or the necessity of removing
band or putting those parts to rest that impart motion to the slide when being
driven for working purposes. The double rack with pinion being most suitable
for long stroke slides. In the engaging and disengaging of the stop motion I
have described this as being done by rotation but I may use a sliding block having
projections that mesh into or gear into spaces formed by corresponding projections
on the lower face of the part moving within the the slide, such a sliding block at one
extremity of its travel would be engaged and give motion to the slide and at the
other extremity be disengaged allowing the slide to rest.
Dated August 16th 1892.

page_text: COMPLETE SPECIFICATION.
Improvements in Eccentric, Crank, Cam, or Toggle Joint Presses.
DANIEL SMITH Junr. Castle Iron Works Raglan Street Wolverhampton
Staffordshire 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 applies to presses that usually consist of a slide made to
reciprocate between suitable guides by an eccentric, crank, camm, or toggle joint
movement such as are generally used for the purpose of cutting-out, pressing,
shearing, drawing or forging metal or other articles. The object of this invention
is to effect the following improvements in such presses as mentioned in the title
viz. First an improved stop motion giving great solidity and the ease of movement
desirable for the purpose of readily engaging and disengaging the part in motion
with or from that to which the motion is to be imparted. Secondly combining the
stop motion with two methods of slide adjustments such adjustments being made
within the slide in order that they may be effected while the crank, camm, eccentric
or toggle joint (hereinafter called crank etc.) or such means as are used to give
motion to the slide are in motion. The adjustment referred to is that of the slide
to suit tools of variable height; this in crank presses is usually effected by a screw
forming part of the connecting rod, which it is practically impossible to adjust
while the rod is in motion. Thirdly the slide, stop-motion and means of adjustment
in combination with the means of working the slide independently of the crank etc.
used to work the slide when cutting or otherwise being used for the purpose of tool
setting. Fourthly a means of disengaging the stop motion and preventing the
occurrence of two strokes or a repetition of the slide by one movement of the
treadle or disengaging motion. I will first describe the stop motion I intend to use
in the slide apart from the means of adjustment, it being a further modification of
the principle employed, described, and illustrated in my Letters Patent No. 659 of
1892. In that case the stop motion block used was in one case caused to slide and
the other to swing from a centre while in the present one the block is caused to
rotate or partly rotate. The description will be best made clear by reference to
the accompanying drawings in which Fig. 1. represents a front elevation and Fig. 4
a sectional elevation of a slide A caused to reciprocate vertically in suitable guides
(not shown) by the crank C, being connected to the slide A by the rod R. Within
the lower end of the rod R is the ball part B secured-yet free to swing or rotate
within the cup of the plunger P (Fig. 4)-by the screwed gland G. The plunger P
being free to slide vertically within the slide B but incapable of withdrawing out
of the slide, being thereby prevented by the set pin h Fig. 1. entering into the
groove within the plunger P shown by broken lines, or by any other similar or
suitable means. On the lower face of the plunger P I form projections I (Fig. 4)
these also form the spaces K, their form and the arrangement preferred are best
shown by the sectional view Fig. 9. On the bottom of the recess within the
slide A Fig. 1. is a block W preferably circular having on its upper face projections
similar to and corresponding in their relation to each other and of the same height
or depth as those on the lower face of the plunger P, that is the projections I on
the lower face of the plunger P, are capable of meshing into the spaces N caused
by the projections M on the upper face of the block W. From this it will be seen
that when the block W is put into such a position that its projections M mesh into
the spaces K of the plunger P, that the latter can move up and down within the
slide A without giving motion thereto, the slide is now supposed to be at the top of
its stroke held by the friction of its guides (not shown) but previously referred to, so
that while the crank C is in rotation the plunger P reciprocates or slides within
the recess of the slide A and by turning the handle X in the direction of the
arrow 1 (Fig. 1.) the projections M on the block W are rotated or brought under

page_text: so as to correspond with the projections I on the lower face of the plunger P and
thereby cause the slide to descend or make a stroke; the latter being effected, the
moving again of the handle X into its original position will allow the slide to remain
at rest while the plunger P continues to work up and down within the slide A.
Fig. 21 is an elevation of the block W and Fig. 22 a plan removed from the
slide A Figs. 1 and 4. On reference to Figure 22 it will be seen that the upper
face of the block W. is divided into six parts or segments creating six nearly
corresponding spaces. The projections on the block W being slightly smaller
(just sufficient for clearance or free passage) than those on the plunger P, and on
the latter the spaces are wider or open enough to receive the projections on the
block W. From this it will be seen that when the block W is under the plunger P
that one sixth of a turn by the handle X of the block W will suffice to put its
projections under to strike on or disengage or prevent it from meshing into those
of the plunger P. There are other ways of operating or rotating the block W to
effect the starting and stopping of the slide. It may be turned backwards and
forwards or caused to rotate intermittently in one direction, this I shall refer to
later on.
As there is no means within the slide A Figs. 1 & 4 of adjusting it
vertically, the upper end of the ball part is screwed into the rod R thereby forming
the ordinary adjustable connecting rod. I will now describe the combination of
this improved stop motion and slide with the two methods of effecting the vertical
slide adjustments to give such variableness to the height of the slide as may be
required by any variation in height of or space required for tools. In these
illustrations the same letters or figures of reference occurring in one or more views
denote corresponding parts. Fig. 2. is a front elevation and Fig. 5. a sectional
elevation of the same parts as Figs. 1 and 4 with the connecting rod R solid or
without means for giving vertical adjustment to the slide A, and the latter contains
the same form of stop-motion as that previously described excepting that its
parts P&W are contained within the cylinder part E, this being plain on its
outer side as better shown by Fig. 13, the ledge V being to receive the thrust of
the annular nut D that screws into the top of the slide A, the depth of this nut
being more than equal to the amount of adjustment required to be effected by the
packing plates a and a (Figs. 2 & 5) these are inserted in the base of the slide
through the slot hole & Fig. 2. If it is desired to increase the space for tools the
nut D is unscrewed sufficient to relieve the packing plates a and a' from pressure
and one or more as may be required are removed and then the nut D is screwed
down again raising the slide A and compressing the lower end of the box E
on to the remaining plates within the slide A, or if there are no packing plates
it must bed solid on the bottom of the interior slide. A grip or locking uut
(not shown) may be with advantage used to prevent the nut D from coming loose
and forming undesired backlash. I prefer to use this packing plate form of adjust-
ment in the case of very heavy work more especially in large geared presses or
presses worked by toggle joints or such cases where the pressure to be withstood is
greater than a screw means of adjustment would stand. For presses such as are
used for light or medium work or in cases requiring fine adjustments I prefer to use
the form of screw adjustment shown by Fig. 3. this being a front elevation and
Fig. 6 being a sectional elevation. Figs. 7. 8. 9 & 10 being transverse sections of
Figs. 3 & 6 through the cross lines A. B, C, D, E, F, and G. H, on Fig. 6. In
this case also the stop motion remains the same and the box E is screwed on its
outside and the interior of the slide A (Fig. 11.) is screwed to match so that by
rotating the box E it raises or lowers the slide A as may be desired to suit the
variable height of tools or nature of the work to be done, but in this case the
handle (or means to be hereafter described) used to partly rotate the block W must
be connected centrally by insertion in the hole r formed within the part that passes
through the centre of the lower end box E Fig. 6 so that the latter freely rotates.
The advantage of forming the stop motion within the slide A instead of in the spur
or fly wheel usually fixed on the crank shaft consists in the reduction of shocks
incidental with the parts in motion coming in contact with those at rest, because

page_text: the number of parts to be put into motion are considerably, less.
With the stop
motion within the slide the crank shaft and connecting rod are always in motion
and when the stop motion is put into action the slide and tools are the only parts
that are forced down and in a vertical press the gravity tends to take the slide in
the downward direction and the shock of impact is practically unappreciable, this
being very desirable in high speed presses. To say that one uses a stop motion to
start or give motion to the slide sounds contradictory but it must be herein under-
stood that the term "stop motion" applies to the combination of such parts as are
essential to the stopping and starting of the press slide. On the other hand when
the clutch or stop motion is within the spur or fly wheel, the crank shaft, connecting
rod, slide and tools are all at rest, and in medium or large presses their weight is
usually very considerable the wheel running at a high velocity and on the clutch
being thrown in, the high speed of the wheel has to be instantaneously imparted to
a mass of parts viz. the crank shaft connecting rod, slide and tools, this frequently
leads to breakdowns and the wear in the clutch or stop motion parts is therefore
very great. It is very desirable that although the crank and connecting rod are in
continual motion to be able to lower the slide and top tool to the bottom of its
stroke or in other words to be able to connect or detach at will the slide A. from
the motion of the connecting rod R. this I accomplish by making the connecting
rod R as shown by Figs. 3 & 6 in which the R part of the rod is preferably bored
with a plain hole with provision for lubrication (Fig. 3) and the upper end of the
lower part B turned to fit freely without shake and by means of the lever Z
screwing upon a grip piece Y I secure the upper part of the rod R upon the lower
part B so that when the press is at work I have only to unscrew or pull down the
lever Z and the slide A becomes liberated from the rod R and remains at the
bottom of its stroke, the R part of the connecting rod continuing to slide up and
down freely on the B part and by judicious use of the lever Z and the combination of a
friction screw lever t Fig. 24. acting on the slide guide, the slide A can be retained
at the top of its stroke when the stop motion is disengaged or can be caused to
remain at the bottom of its stroke if the lever Z in the connecting rod R and the
lever t Fig. 24. of the slide guide are unscrewed. These combinations will be found
very convenient for tool setting or changing tools as they will afford ample control
over the slide without risk of breakage and without stopping the motion of the
driving wheel Q. In place of the friction grip Y I may have a longitudinal split
in the lower part of the rod R and the screw on the lever Z could be also so
arranged as to close such split and reduce the diameter of the barrel part R and so
grip the B part. In cases where the connecting rod R is solid as in Figs. 2 & 5
the same lowering of the slide A can he accomplished but not so quickly by
unscrewing the annular nut D out of the slide A Figs. 2 and 5 a distance equal to
the stroke of the crank, the box E containing the stop motion will be free to work
up and down within the slide without lifting the same and in this case as in the
latter form of adjustment (though not mentioned) I prefer to form a tooth rack J
on the back of the slide as shown removed from the press by side view Fig. 28. and
by broken lines through front view Fig. 29. Through the body of the press pass
a spindle with pinion and lever as shown by Figs. 31 & 32 the O side of the pinion
gearing into the rack J on the slide A so that by use of the lever S the slide cau
be caused to move up and down independent of and without the crank motion for
the purpose of tool setting or tool changing. The annular nut D Figs. 2 & 13 on
being screwed down on to the shoulder V of the box E the slide A would again be
raised by the connecting rod or crank motion. In the box E. Figs. 2 & 13 u is a
slot for the handle X of the block W to vibrate in. Fig. 14. is a plan of the
gland G used to prevent the plunger part P from withdrawing out of the box E
during the up stroke of the crank. Fig. 15 is a plan of the box E with the annular
nut Dremoved. Fig. 18. is an elevation of the plunger P showing the projections!
and the recesses K. Fig. 19. is a plan of sare showing the recess for the lower
end of the connecting rod B Figs. 16. 17 and 20. Fig. 21 showing the elevation of
block W and Fig. 22 is a plan, these are shown separate for greater clearness. In
I

page_text: reference to the lever and pinion shown by Figs. 31 and 32 in the case of a press
having an extra long stroke say four to eight inches, in order to make the pinion
wheel O more effective in giving sufficient motion to the slide A or at the same
time to reduce the motion of the lever S I may fix another toothed rack (not
shown) on to the body of the press in such a position so as to be opposite to and
paralell with the toothed rack J formed on the back of the slide A. Figs. 28.and 29
and between these two racks I place the pinion wheel with its O. side gearing into
the slide rack J and the other toothed side gearing into the toothed rack (not
shown). The latter being a fixture the pinion wheel O. by the downward motion
of the lever S is caused to roll down the unseen toothed rack and imparts double
the amount of motion to the press slide A. It would answer if only the one rack
was used and for this extra motion this arrangement is more suitable for the longer
stroke presses. At present I have only described one method of disengaging the
block W by means of the hand lever X say Figs. 1. 2. 3 etc. but as it is also desir-
able to operate such block by treadle motion I will now describe the means for so
doing. On Sheet 3 Fig. 23 is a side view of a single acting cutting out press with
the driving wheel Q omitted, also the set pins g and the pin heads (of Fig. 24.) in
order that the parts to be explained may not appear confused. Figs. 24 and 25
are a front and back view respectively of Fig. 23 with crank C and connecting
rod R and wheel Q omitted from Fig. 25.
Through the back of the slide A is a hole i (Fig. 25) for the purpose of gaining
access to the back of block W, into this block is screwed or otherwise firmly
secured a staple part shown in plan detached by Fig. 27 on its extremities are two
rollers 3 and 3', these will be seen in their working position in the back view Fig. 25.
5 is a spring pushing the roller 31 of the block W against the curved bar 6 this
being free to swing on the cross bar 11. In front of the curved bar 6 keyed or
otherwise fixed on the spindle 8 is a square shaped camm 9. shown by broken lines
on Fig. 23 (because hidden by the press frame and ratchet wheel 10), this is also
keyed on the spindle 8, thereon also is the pawl lever 12 connected to and operated
by the treadle 13. When it is desired for the press slide to make a stroke the
operation is as follows;-Pressure is put upon the treadle at 13, this by virtue
of the connecting rod in causes it partly to rotate the pawl lever 12, the pawl
thereon engages with the ratchet wheel 10 and thereby partly rotates the spindle (8)
and square shaped camm 9, one of the projections on the latter as it partly rotates
forces the curved bar 6 in the direction of the arrow 14 (Fig. 23.) from between
the rollers 3 and 31 or from against the roller 3' nearest the spring 5, this allows the
spring 5 to partly rotate the block W and thereby engage the block W with
the plunger P causing the slide A to make one stroke downwards. Since the
projection on the camm 9 has passed the curved bar 6 the latter is instantaneously
forced back to its normal position by spring 15 before the slide A commences to
rise, the side curve on the lower end of the bar 6 (Fig. 25) now comes into use, the
roller 16 shown in broken lines indicates approximately its position when the
slide A is at the bottom of its stroke and the block W engaged, it will now be
evident that as the slide A rises the roller 16 or really 31 will travel up the curved
bar 6 and so partly rotate the block W and the roller 3 back again into its
original position viz. with the slide at the top of its stroke and the block W
disengaged, leaving the slide up at rest ready for the re-adjustment of work
between the tools preparatory to the next stroke. Also the spring 17 (shown only
on Fig. 23.) raises the treadle 13 and at the same time lifts the pawl lever 12 and
allows the pawl to fall into the next tooth for giving effect to the next stroke, this
being made by a repeat of the operations just described. It must be observed that
there are as many teeth in the ratchet wheel 10 as there are projections on the
square camm 9. I have called camm 9 square but it may be any shape as may be
determined by the number of teeth or projections that will properly move the
curved bar 6 and harmonize with the number of teeth on the ratchet wheel 10.
The left hand roller may be dispensed with and the roller would suffice as shown by
Fig. 26, and in small presses a plain peg projecting from the block W would be

page_text: use
suthcient as the movement required to disengage the block W is so small; but in
presses for heavy work the projections on the block W and plunger P would be
less in number and in consequence wider apart to secure greater strength necessi-
tating a greater amount of motion to effect disengagement of the stop motion and
in these cases the rollers are preferable. In order to lower the slide A by means of
the telescopic connecting rod previously described and shown principally by Figs. 3
and 6 it would be necessary by the use of the peg al (Figs. 23 & 24) to peg back or
otherwise secure the handle X (Figs. 23 & 24) and thereby prevent the stop motion
or blocks W and P (Fig. 6) from engaging as the slide A descends. The curved
bar 6 being then taken back in the direction of the arrow 14 by pressure applied to
the treadle 13 clear of the rollers 3 and 31 and there retained on one of the corners
of the square cam 9 by a removeable stop shown at 13' hinging on the stand (shown
thrown back on the peg 14' when not being used) but indicated by broken lines
when it its working position; at this point the treadle 13 will be in about the
middle of its travel so that further pressure on the treadle will liberate the stop 13
and allow the curved bar 6 to return to its original or vertical position; by these
means the curved bar 6 is kept out of the way, during raising or lowering of the
slide for tool setting or other purposes. In the case of screwed connecting rod
Figs. 1 and 3 the vertical adjustment of the slide effects the position of the curved
bar 6 and to make this adjustable it is provided with a slot at its upper end aud
securely clamped by the nuts 18 and nut 19 the latter being pegged as a fixture;
but in the case of the solid connecting rod (Figs. 2 and 5) being used this vertical
adjustment of the curved bar 6 (Figs. 23 to 25) is unnecessary as the slide A
moves in its vertical adjustment outside of the stop motion and without
affecting the vertical distance between the box E the block W and the
crank as the press slide A is taken to the top of its stroke. Again
referring to the means employed to rotate or disengage the block W
there are many equivalent ways to the one described or I may
means as described in my Letters Patent No. 659 of 1892. In the telescopic
connecting rod R as shown by Figs. 3, 6 etc. I may prefer to compound the
principle with the screw adjustment, that is, the lower part of the connecting rod B
may telescope or slide into a barrel part having its upper end screwed, and the
rod R screwing therein for purposes of adjustment. In the case of an eccentric
driven slide such as is shown on Sheet 4 Fig. 33. I may prefer to use the stop
motion as herein described or as described in my Letters Patent No. 659 of 1892
but in order to quickly lower the slide as for tool setting etc. I construct the slide
at the top with internal projections 1, 2 & 3 and make use of the sliding block B
having similar projections 4, 5 & 6. This block serves to carry the weight of the
slide A but when it is desired to lower the latter the block B is by suitable lever,
eccentric or equivalent means caused to slide into the position as shown when the
projections 4, 5 and 6 will mesh into the spaces created by the projections 1 2, & 3
and liberating the slide by removing the friction from its guides and by a lever,
pinion and rack arrangement as previously described the slide A can be lowered
down and let remain at the bottom of its stroke or raised again by such lever as
may be desired. Fig. 33 will be fully understood from its appearance. C being
the eccentric. K the eccentric block. L the box forming part of the stop motion.
E the frame to contain L and D and e, g being packing plates. In either of
these cases I may use the rotatory block stop motion and in the upper part of the
slide AI may use an eccentric or camm to create or fill up the space within the
top of the slide required to lower the slide for tool setting purposes. Fig. 34
being a section of Fig. 33 through the line I K. In this case of detaching the
(weight of the) slide A from the eccentric C and likewise the slide A from the
connecting rod R as previously described (Sheets 1 to 3 inclusive) especially in
the case of medium or large presses it would be best to take greater part of the
weight of the slide A by a suitable spring or balance weight as it would thereby
be easier to work it up and down by hand motion described and shown by Figs. 28
to 32 inclusive.

page_text: OF CHEST presses and
PATOS as
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materials as are generally used.
Before proceeding to the claims I desire to disclaim:
(1.) The principle of connecting rods having their parts joined or screwing into
each other as a means press slide adjustments.
(2.) The use of packing plates inserted between the parts moving the slide, and
the interior of the slide being moved.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
(1.) The stop motion consisting of the block W with its projections M and its
spaces N in combination with the plunger P having projections I and spackes K
substantially as herein described and shown having reference to Figs. 1, 4, 18, 19, 21
and 22 of the drawings herewith and for the purpose as herein stated.
(2.) The block W constructed as herein described and shown capable of being
engaged or disengaged by turning within the cylinder of the slide A by the
handle X having reference to the same figures of the drawings herewith as stated
in Claim (1).
(3.) The improved form of connecting rod R with the part B capable of sliding
freely within the R part of the rod when relieved from the frictional grip of the
handle Z and screw Y for the purpose as herein described and shown chiefly by
Figs. 3 & 6 of the drawings herewith for the purpose herein set forth.
(4.) The parts as claimed in Claim (3) in combination with other parts to secure
a screw adjustment in the same connecting rod R. Figs. 3 & 6 as herein described
and for the purpose as set forth.
(5.) The stop motion as claimed in Claims 1 & 2 in combination with the box
part E, annular nut D and the slide A as herein described and shown having
special reference to Figs. 2, 5, 13, 14 & 15 of the drawings herewith for the purpose
of giving vertical adjustment to the slide A by means of packing plates a & a etc.
as herein stated.
(6.) The stop motion as claimed in Claims 1 & 2 in combination with the screwed
box part E and the internally screwed slide A as herein described and shown having
special reference to Figs. 3, 6 to 12 inclusive of the drawings herewith for the
purpose of giving vertical adjustment to the slide A by means of the screwed box
part E and the internal screwed cylinder of the slide A as herein described and
shown.
(7.) The construction of the block W having a stem or boss part p passing
through the centre of the lower end of the box part E so as to allow the latter to
rotate when effecting the slide adjustment (vertical) as herein described and shown
by the drawings herewith.
(8.) The combination of the parts mentioned in Claims 1, 6 & 7.
(9.) The means employed for disengaging the stop motion or block W as herein
described and shown by Figs. 23 to 27 inclusive of the drawings herewith com-
prising the curved bar 6, the spindle or fulcrum 11 and spring 5 also rolls 3 & 31
shown detached by Figs. 26 & 27 or a peg, i.e. without a roll or the equivalents of
any of these parts to answer the purposes as herein stated.
(10.) The means employed comprising the ratchet wheel 10, pawl and lever 12,
camm 9 and spindle 8 connected to the treadle 13 for the purpose of preventing a
repetition of strokes on the part of the slide A or as a means of restricting the
slide A to one stroke for each movement of the treadle 13 as herein described
and shown as aud for the purpose above stated having reference to the drawings
herewith.
(11.) The slot in the upper end of the curved bar 6 and the nut 18 and collar 19
as and for the purposes herein described and shown by the drawings herewith.
(12.) The means herein described or the equivalent for the purpose of retaining
the handle X or withholding the stop motion block W from engaging as the slide A
is lowered for tool setting purposes as herein stated.

page_text: (13.) The combination of the parts enumerated in Claims 8 & 9 as and for the
purposes herein described and shown by the drawings herewith.
(14.) The combination of the parts enumerated in Claims 8, 9, 10 & 11 as and for
the purpose set forth and herein described and shown by the drawings herewith.
(15.) The lever S and pinion O, rack J in combination with the means claimed
in Claim 3 for detaching the slide A from the rod R while the latter is or is not in
motion, or in combination with the means of adjustment named in Claims 3 & 5 as
herein described and set forth having reference to the drawings herewith.
(16.) The lever S and pinion O, rack J Figs. 28 to 32 inclusive of the drawings
herewith and the second or unseen rack fixed to the press body as herein described
as being the more suitable for presses having long strokes in combination with the
means of adjustment claimed in Claim 5, also in combination with the means of
adjustment claimed in Claim 6, also in combination with the means of adjustment
as claimed in Claim 4 having reference to such figures of the drawings herewith as
therein stated.
(17.) The construction of a press having in combination such parts as shown in
Figs. 23 to 32 inclusive of the drawings herewith as berein described.
(18.) The slide A as shown by Figs. 33 & 34 (Sheet 4) of the drawings here-
with having special reference to the projections 1, 2 & 3 and the sliding block B
capable of meshing into the spaces within the top of the slide A for the purpose
of quickly lowering the slide for tool setting purposes etc., also the use of a camm
or eccentric as herein described in lieu of the sliding block B and the pro-
jections 1, 2 & 3 herein described and shown on the drawings herewith.
(19.) The combination of the parts enumerated in Claim 18 with the means
used for raising the slide A for tool setting purposes etc. as herein described and
shown having reference to Figs. 28 to 32 inclusive of the drawings herewith.
May 16th 1893
DANIEL SMITH, JNR.