Improvements in Lasting Machines.
Year: 1892

page_text: Date of Application, 12th Apr., 1892-Accepted, 28th May, 1892.
COMPLETE SPECIFICATION.
Improvements in Lasting Machines.
I, JOHN THOMAS AVERY, of No. 304 North Eighth Street in the City of
St. Louis, State of Missouri, United States of America, Gentleman, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to shoe lasting machinery by which the upper is auto-
matically secured to the insole after they have been fittel and roughly secured
to the last, the whole being held to the machine, in the manner hereinafter
specified, by the operator. More particularly, it relates to improvements in the
lasting machine for which United States Letters Patent, No. 387,926, were
granted to Charles Sinning and myself on August 14, 1888 and has for its
object to make the said machine more efficient in practical operation, to simplify
the machine as a whole, dispensing with parts and in place thereof substituting
other parts and movements, reducing to a minimum the operative parts and
movements necessary to effectively perform the work required of the machine.
My invention consists, among other things, in the several features of improve
ments enumerated below:-
First. In mounting the pinchers and guide rest on an independent head stock,
which is secured to the framing of the machine and to which is given, as
hereinafter described, a reciprocating movement to the right and left, effecting the
feed of the machine.
Second. In specially designed mechanism, convenient for regulating the amount
of sidewise movement of the sliding head stock, i.e., the feed, as has been found
necessary in operating on different parts of the last ;
Third. In mounting the pinchers in a secondary head piece, which is secured to
the independent sliding head stock in such manner as to be capable of being given,
by the mechanism hereinafter described, a forward and backward movement
independent of said sliding head stock;
Fourth. In a specially formed guide-rest which is secured along with the
secondary head piece which carries the pinchers, to the sliding head-stock, whereby
the last when pressed against it, in the operation of the machine, is fed positively
to the work and the leather of the upper held in position convenient to be taken
hold of by the pinchers;
Fifth. In the addition of a retaining device and operating mechanism, which, in
the operation of the machine, will prevent any retrograde of the last in the feed of
the machine;
Sixth. In an improved form of the gripping jaws, whereby certain desirable
results are accomplished;
Seventh. In improved mechanism for operating (raising and lowering and
opening and closing) the gripping jaws, whereby the several mechanical movements
are accomplished, at the right time, through the instrumentality of one cam;
Eighth. In mechanism for regulating the height to which the grippers are
raised;
Ninth. In an improved form of folder;
5
Tenth. In an improved form of tack box;
Eleventh. In an improved form of pit in the tack deliverer jaws.
This description and the accompanying illustrations relate to these new features
the remaining parts of the machine in construction and operation being practically
similar to what is set forth in the aforementioned Patent to which reference is
herewith made.

page_text: In the accompanying drawings, like numbers of reference denote like parts in
the several figures.
Figs. 1 and 2 are, respectively, side and front elevational views of the top part of
my improved lasting machine;
Fig. 3 is a plan view of the same;
Figs. 4 and 5 are, respectively, side and front elevational views of the base
portion of my machine;
Figs. 6 and 7 are detailed views of the feed regulating mechanism, showing,
respectively, the relative position of the regulating device when making a minimum
and maximum amount of feed, showing, in dotted lines, the extreme positions of
the sliding head stock in either case;
Fig. 8 is a side elevational view of the retaining device and its operating cam;
Fig. 9 is a side elevational view showing the action of the secondary head piece
carrying the pinchers and mechanism for operating the same in its forward and
backward movement;
Fig. 10 is a view, part in section and part in plan, taken as on the line 10-10
in Fig. 9;
Fig. 11 is a side elevation showing the mechanism for raising and lowering the
grippers and for opening and closing the gripper jaws and the mechanism for
regulating the amount of such movement;
Fig 12 is an enlarged detail view, as in Fig. 11, of the device for opening and
closing the gripper jaws as operated by the raising and lowering of the grippers as
a whole;
Fig. 13 is a side elevation of the device for giving the twisting movement to the
grippers and the foot treadle regulation of the amount of such twisting movement;
Fig. 14 is an enlarged detail view, showing in dotted lines, the relative position,
in a side view, of the gripper jaws when twisted to their fullest extent;
Figs. 15 and 16 are sectional views, taken on the line 15-15 in Fig. 14,
showing, respectively, in plan view, the position of the gripper jaws shown in
Figs. 13 and 14;
(There is no Figure 17).
Fig. 18 is a side clevational view, partly in section as on the line 18-18 in
Fig. 22, of the tack-box, race and delivering disc;
Fig. 19 is a plan view of the tack box, with the cover removed;
Fig. 20 is a section of the tack race, taken on the line 20-20 in Fig. 19;
Fig. 21 is a sectional view of the tack box taken on the line 21-21 in Fig. 19;
Fig. 22 is a plan view of the interior of the tack delivering disc box, showing
the pawl for engaging the revoluble disc to prevent its backward rotation in the
'backward movement of the tack box supporting frame;
Fig. 23 is a longitudinal section of the spring lip of the folder, taken as on the
line 23-23 in Fig. 24;
Fig. 24 is a plan view of the spring lip of the folder ;
Fig. 25 is a plan view of the end of the folder as a whole;
Fig. 26 is a section taken on the line 26-26 in Fig. 25;
Fig. 28 is a plan view of the end of the reciprocating bar that delivers the tack
to the tack hammer;
Fig. 27 is a section taken as on the line 27-27 in Fig. 28;
Figs. 29, 30, 31 and 32 are views of a somewhat different form of folder than
that illustrated in Figs. 23, 24 and 25, being, respectively, a plan view, a longi
tudinal section taken as on the line a-a in Fig. 29, a front end view and a
cross-section taken on the line - in Fig. 29;
Figs. 33 and 34 are comparative illustrations of folds as made with a straight
pushing folder as heretofore used and as made with my improved turn-over folder,
also showing the consequent advantages in the placing of the tack in such folds for
retaining the same.
1 is a head piece which is secured to the laterally projecting portion 2 of the
framing 3 of the top portion of the machine, which is rigidly secured to the bed

page_text: plate 5 of the top part by slides 6 (see Figs. 1, 2 and 3) so that it is capable of a
right and left reciprocating movement relative to the rest of the top part of the
machine as shown in dotted lines Figs. 6 and 7. This movement is effected by
connecting the sliding head piece 1, by the connecting rod 7, to one end of the
lever 8, see Figs. 1, 2, 3, 6 and 7. The lever 8 is fulcrumed at 9 to the bracket
piece 10, which is rigidly secured to the framing 2. The free end of the lever 8 is
slotted out to receive the sliding block 12, which is centrally perforated to receive
one end of the connecting pivot bolt 13. The other end of the bolt 13 is let into a
sliding block 17 similar to 12, which is fitted to a slot formed in the free end of a
pivoted arm 14 (see Figs. 1 and 9). The arm 14 is rigidly secured on one end of
the journalled shaft 16, which has bearing 52, 52 secured to the bed plate 5. To
the other end of the shaft 16 (see Figs. 1, 3 and 9) is rigidly secured the crank
arm 19, which carries on its free end a laterally projecting stud, which preferably
carries the antifriction roller 22, which is adapted to fit into and engage with the
laterally off-set cam groove 24 cut in the circumference of the cam drum 25. The
cam drum 25 is mounted on the cam shaft 28, which has journal bearing at 29, 29
(see Figs. 1, 2 and 3) in the supporting frame work 3 and is given motion through
the drive wheel 30 mounted on one end of the same, as shown in Figs. 1, 2 and 3.
The connecting pivot bolt 13 is connected, through the intermediate connecting
rods 31 and 32 and the lever 33 (see Figs. 2, 6 and 7), to the treadle lever 34 (sec
Figs. 4 and 5). The coil spring 35, resting on the stirrup 36 which is secured to
the underside of the bed plate 5, tends to raise the foot treadle 34, and with it the
connecting pivot bolt 13. The treadle 34 may be locked against such upward pull
by allowing it to engage in one of the several notches 37 formed therefor in the
base portion 38 of the framing of the machine. As will be seen from the drawings
and description, the amount of movement of the pivoted arm 14 is fixed by the
reciprocating movement of the crank arm 19 and this by the predetermined lateral
displacement of the cam groove 24. The consequent amount of movement of the
end of the lever 8, to which the connecting rod 7 is connected, is dependent on the
position of the pivot bolt 13 relative to the center of the shaft 16, about which
the arm 14 oscillates, and the fulcrum bearing 9 of the lever 8, this being adjustable
as described, by the foot treadle 34. The two extreme positions of the connecting
pivot bolt 13 are shown in Figs. 6 and 7, as well as the consequently different
amount of movement (shown in dotted lines) of the sliding head piece 1.
To the sliding head piece 1 is rigidly secured a bracket piece 39 (see Figs. 1, 2, 3
and 8) which carries on its end the guide rest 40 in a position in line and just
forward in the feed of the machine, of the position of the pinchers 41, (see Figs. 1
and 2). The guide rest is so formed that it acts as a guide and rest for the
operator to hold the last 44 against, and prevent the last being raised when being
operated on by the pinchers 41, as hereinafter described, and so that its downwardly
projecting finger end 42 (see Figs. 1 and 8) which is designed to project in under
the upper 43 (see Fig. 8) between it and the edge of the last 4+, or the edge of the
metal shield 45 and the insole 46, and act as a guide to keep the work in line, shall
be operative at a point in close proximity to where the work of the pinchers 41 and
the tack driver 47 is being done. The guide rest 40 has, therefore, a reciprocating
movement to the right and left corresponding, in the operation of the machine, to
the movement of the sliding head piece 1. When the last 44, with attached
leather, is held firmly up against it (aided, as hereinafter described, by the
pinchers) the last will tend to follow the same. The backward movement of the
work, however, is prevented by the end of the pointed retaining finger 48 projecting
into the leather of the insole 46, as shown in Fig. 8. This finger 48 has no lateral
movement, being adjustably secured to the free end of the lever bar 49 (see
Figs. 1, 2, 3 and 8), which is fulcrumed to the framing 3 at 53 and carries on its
other end a roller 50 which engages with and is operated by the flat sided cam 51
mounted on cam shaft 28. The flat portion of the cam 51, in the revolution of the
same, permits the retaining finger 48 to be raised away from the insole 46, as
shown in dotted lines in Fig. 8, by the spring 54, one end of which is secured to

page_text: ་
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the back end of the lever 49 and the other end to the framing 3. The cam 51 is
so placed on the shaft 28 relative to the position of the off-set in the cam groove 24,
which operates the sliding bead piece 1, that the retaining finger 48 is removed
from the insole 46 at the time the head and with it the guide 40 and last 44 is
moved forward. At all other times it is in position to prevent any movement of
the work to the right or left.
Secured to the end of the bracket piece 39, along with the guide rest 40, is the
downwardly projecting finger piece 154, which is designed to raise the edge of the
leather of the upper 42, in the work, to a position convenient to be taken hold of
by the pinchers 41, as hereinafter described. It may be found in practice of
advantage to form the guide rest 40 as a closed loop, forming one side to corre-
spond to the outline of the finger piece 154 and perform its office, thereby
strengthening the guide rest 40..
I secure the pinchers 41, in my improved machine, to a secondary head piece 55,
which is secured to the sliding head picce 1 between the guides by a pivot bolt 56
in such manner that the lower portion may be given a forward movement relative
to the head piece about the pivot bolt 56 as a center, as shown in Fig. 9. This
movement of the head piece 55 is effected by being mechanically connected through
the intermediate bar 57, pivoted lever 58, bell crank lever 59 and connecting
rod 60), to the crank arm 19, already described. See Figs. 9 and 10 and Figs. 1
and 3. The forward movement of the bar 57, as derived from the operative
mechanism described, is not transmitted positively to the head piece 55, but is done
through the interposed compression spring 61, which permits of a certain amount
of forward movement of the pusher bar 57 without moving the head piece 55,
except as against the tension of the compressed spring 61. It will be seen then,
that the resultant forward pull of the pinchers, as hereinafter described, is
dependent on the strength of the spring 61, and it may be found of advantage in
practice to have replaceable springs of different strengths to correspond to the
different grades of leather used in the uppers. As will be seen from an inspection
of Fig. 10, the connecting rod 60 is not connected to the end of the bell-crank
lever 59 by a fixed connection, but is passed through an eye secured to the end of
the bell-crank lever 59 the movement of said rod 60 being communicated to the
bell-crank lever 59 only when the nuts 62 abut against the end of the bell-crank
lever 59 in the right hand movement of the crank arm 19 and the rod 60 connected
thereto, as operated by the cam groove 24 in the rotation of the cam drum 25, as
shown in dotted lines in Fig. 10. The position of the abutting nuts 62 being
adjustable, the positive amount of forward throw of the head piece 55 (disregarding
the interposed compression spring 61), relative to the operative lateral displacement
of the cam groove 24 is adjustable. The backward movement, to the position
shown in full lines in Fig. 9, is caused by the contraction of the spiral spring 63,
one end of which is fastened to the end of the bell-crank lever 59 and the other end
to the framing 3 of the machine. This spring 63 is shown fully in Fig. 3, it being
broken away in Fig. 10 to show the nuts 62. The operative effect of this forward
movement of the head piece 55 will appear quite fully in the description of the
operation of the pinchers 41, bearings for which are found. in the forwardly
projecting portions 64, 65 of the head piece 55, as seen in Figs. 1, 2, 11, 12 and 13.
The gripping jaws or pinchers 41 are pivotally secured to the lower end of the
gripper shaft 66, which extends up through the sleeve 67 and has a bearing in the
upper projection 64 of the head piece 55, as shown in Fig. 12. The jaws 41 are
forced apart by the bent spring piece 68, placed between them and the ends of
which are secured to either one of the jaws 41, respectively. The jaws are closed
so as to grip any leather between them, by the shaft 66, and with it the attached
jaws 41, being drawn upwardly within the sleeve 67, as hereinafter described and
as shown in dotted lines in Fig. 12, the wedge-shaped outside surfaces of the jaws 41
coming in contact with the inside wall of the sleeve 67 and being pressed together
in the comparatively confined space therein. This upward movement of the
gripper shaft 66 relative to the sleeve 67, whereby the closing of the jaws i

page_text: effected, will be explained more fully hereafter. The raising of the grippers.as a
whole, that is with the sleeve 67, is effected in the following manner: To the
shaft 66 are rigidly secured the flat collars 69, which embrace and act as stops
longitudinally, for the revoluble collar 70. To the collar 70 is pivotally secured
one end of the lever 71, which gets a fulcrum bearing secured to the head piece 55
at 72. On its free end the lever 71 carries a second short lever 73, pivotally
connected thereto at 96, which acts, as far as the raising of the pinchers is
concerned, as an extension of the lever bar 71, as shown in Fig. 11. To the
projecting end of the short lever 73 is secured by a double pivot connection, in
order to allow for the sidewise movement of the head piece, one end of the
connecting rod 74, the other end of which is similarly secured to one end of the
pivoted lever 75, which has a fulcrum bearing at 76 secured to framing 3.
The other or free end of the lever 75 carries an anti-friction roller 80 on a
laterally projecting stud secured thereto, which engages with the cam 78 cut in the
right hand side of the cam drum 79 (see Fig. 11). To the front end of the lever 75
is connected one end of the connecting rod 81, the other end of which is connected
to the free end of the lever 83, which has a fulcrum bearing at 82 secured to the
underside of the bed plate 5. To approximately the middle portion of the pivoted
lever 83 is pivotally connected the upper end of the treadle rod 84, which connects
the lever 83 with the foot treadle 85, see Figs. 4 and 5 and 11. The upper end of
the rod 84 rests on the upper end of a coil spring 86, the lower end of which is
supported in a stirrup 87, which is secured to the bed plate 5 (see Fig. 2). This
spring 86 tends to raise the treadle rod 84, and with it the different parts of the
gripper raising device connected therewith, to its normal position (that shown in
full lines in Fig. 11, see also Fig. 2) against the downward pull of the treadle 85
when depressed to the position shown in dotted lines in Fig. 11 and locked by
permitting the foot pawl 88 to rest in one of the several ratchet notches 89 found
in the base 38 of the machine. The treadle rod 84 is not connected directly to the
treadle 85, there being an interposed spiral spring 90 through which the downward
pull of the treadle 85 is transmitted to the treadle rod 84 (see Fig. 5).
The operation of the gripper raising device is as follows:-It is evident from an
inspection of Fig. 11, that the depression of the short lever 73, and with it the back
end of the lever 71, will raise the pinchers as a whole. By depressing the foot
treadle 85, the lever 73 will be carried downward except when the radially onlarged
portion of the cam 78 is in a position to prevent the back end of the lever 75 from
rising. In that case, the interposed spring 86 will be compressed and be ready to
act and raise the treadle rod 84 and connected parts (to their normal position,
shown in full lines in Fig. 11) as soon as the cam drum 79 has been rotated, in the
operation of the machine, sufficiently to bring the comparatively radially reduced
portion of the cam 78 opposite the roller 80 on the end of the lever 75, permitting
it to approach the centre of the cam drum, thereby allowing the spring 86 to
depress the back end of the lever 71. The height to which the pinchers are raised
within the radial limits of the cam 78 is dependent on the amount of depression
given to the treadle 85.
To the upper end of the sleeve 67 is rigidly secured a collar 91. Between the
collar 91 and a shoulder formed by diametrically reducing the upper portion of the
sleeve 67 is revolubly secured the collar 92 similar to the collar 70 on the gripper
shaft 66, already described. To this collar 92 is pivotally connected one end of the
lever 93 the other end of which gets a pivot bearing 94 secured to the head piece 55.
The forward end of the shaft raising lever 71 and the sleeve raising lever 93 are
connected by the jointed connecting bar 95, forming a toggle joint between the two
levers whereby they may be separated or brought toward each other, thereby
raising or lowering the shaft 66 within the sleeve 67, relative thereto, effecting the
closing or opening of the gripper jaws as already explained. The short lever 73 is
formed with a laterally projecting arm 196 in the end of which is secured the
pivoted block 97. One end of the toggle-rod 98 is connected with the joint of the
toggle levers 95 and the other end loosely fitted in a perforation in the block 97.

page_text: effected
On the end of the rod 98, beyond the block 97, are secured the check nuts 99.
Around the rod 98, between the block 97 and the forward end of the rod, is loosely
fitted the flanged collar piece 100, the reduced portion of which extends through a
perforation formed in the loop of the stirrup 101 so as to be in a position to be
acted upon by the block 97. The stirrup 101 is pivotally connected at its open
end to the head piece 55. The forward push of the block 91, as against the
collar 100, as hereinafter described, is transmitted to the rod 98 through the
interposed spring 102 the back end of which rests against the collar 100 and
the forward end against the comparatively enlarged head portion of the rod 98.
The tension of the spring 102 tends to straighten toggle-joint lever bars 95, but this
tension is adjusted so that it is not strong enough to raise the shaft 66, relative to
the sleeve 67, as long as the flange collar 100 rests in the bottom of the stirrup 101,
or until the collar 100 is pushed forward by the block 97. It will be seen from an
inspection of Fig. 12 that the closing and opening of the gripper jaws 41
by the rotary movement of the short lever 73 about the pivot bearings 96, relative
to the lever 71. The amount of this rotary movement of the lever 73 is determined
by the stops 197 formed in the same abutting up against the underside of the
lever 71 in the operation of raising and lowering the pinchers as a whole. The
backward movement of the block 97 abutting against the nuts 99 makes the opening
of the jaws 41 positive in the relative movement of the lever 73 as in the pressing
of the pinchers as a whole. The object of effecting the forward movement of the
toggle-rod 98 through the compression of the interposed spring 102 is, that, in some
instances, as when the grippers have included a fold of leather thicker than usual,
the jaws will be closed to a degree only sufficient (dependent, of course, ou the
predetermined strength of the spring 102) to firmly grasp the leather, not
necessarily closing the jaws to the extent that would be consequent if the toggle-
joint were connected positively to the lever arm 196. The object of raising the
pinchers as a whole, as well as giving them the forward movement already described
and as shown in Figs. 9 and 10, which is done when the pinchers are in their raised
position, is to properly stretch the leather of the upper over the edge of the last.
Besides the stretching of the upper, it is necessary at some parts of the work (as
in rounding the toe) to crimp the leather preparatory to its being tacked and this
is done by causing the grippers 41 to be turned about the center of the shaft 66
with the sleeve 67. For this purpose the sleeve 67 is formed with a spur gear 198
near its upper end which is in engagement with a rack which is fitted in slides in
the head 55 and is operated by being pivotally connected with the end of the
crank-bar 104 (see Figs. 2 and 13) secured to one end of the crank shaft 105,
journalled in a sleeve 199 secured to the head piece 1. The crank shaft 105 has
secured to its other end a crank arm 106 at right angles to the crank arm 104 so
that when the end of the arm 106 is raised or lowered, as hereinafter described, the
end of the arm 104 will be moved to the right or left, respectively, revolving the
sleeve 67 and with it the grippers 41. The free end of the arm 106 is pivotally
connected by a ball and socket joint, or other similar connection, to make provision
for the sidewise movement of the head piece, to one end of the connecting rod 107,
the other end of which is similarly connected with one end of the pivoted lever 108
which has a fulcrum bearing on the lever shaft 109 secured to the framing 3 and
carries on its other end a laterally projecting stud and anti-friction roller 110.
This roller 110 on the end of the lever 108 is in a position to engage with the cam
groove 112 cut in the left hand side of the cam drum 79 (see Figs. 3 and 13). The
main portion of the cam groove 112 is nothing more than an annular groove of a
width to accommodate the roller 110. At one point of the groove 112 it is recessed
forming a radially enlarged groove, as at 113, into which in the revolution of the
cam drum 79, the roller 110 may be forced, thereby giving a twist to the pinchers 41,
through the intermediate mechanism already described. The normal position of the
roller, that shown in full lines in Fig. 13 is against the central hub portion of the
cam drum, and there is no tendency, in the operation of the machine, for the roller 110
to enter the recess 113 unless impelled to do so by the tension of the spring 114 (see

page_text: Fig. 2), through the intermediate lever 115 and connecting rod 116 (see Fig. 13)
when compressed by the foot treadle 117 being depressed and secured in one of the
several notches 118 formed in the framing 38 of the base of the machine. The
connection between the treadle lever 117 and the spring 114 is practically similar
to that between the treadle lever 85 and the spring 86, already described. As will
be seen, the amount of movement, within the radial limits of the recess 113 and the
consequent amount of throw of the rack 103, giving the twisting motion to the
sleeve 67, is dependent on the amount of depression given to the treadle lever 117.
The extreme amount of such twisting of the pinchers is approximately one-quarter
of a turn, as indicated in Figs. 13 and 14 and in the cross-sections, Figs. 15 and 16.
As shown in Figs. 13 and 14, the operative parts of the pincher jaws 41-the parts
by which the leather is taken hold of-are thrown to one side of the centre of the
shaft 66 about which they revolve when twisted as described. The object of this
is that all the leather included in the bite of the jaws 41 will be given a more or
less forward or tightening pull, as shown in the change of position of the jaws 41.
in the sectional views, Figs.. 15 and 16, respectively, and no part of the leather
backward or slackening movement as would be the case if the operative part of the
jaws was equally disposed of on either side of the centre of revolution.
a
My improved tack box, as illustrated in Figs. 18, 19 and 21, is constructed as
follows: The box 122 itself is a circular closed box, in the lid of which is an
opening (the lid 119 of which is shown in Fig. 3) for inserting the tacks 123 and
is secured to a frame 121, to which is mechanically given, in the operation of the
machine, the several movements practically similar and in the same manner as
shown and described in the Patent already referred to. Though a central
perforation in the bottom of the box is fitted the stem 124, to the projecting end
of which is secured the grooved pulley 125 which is connected, as shown in Figs. 2
and 3, to a small grooved pulley 144 secured on the shaft 28 by the elastic belt 126.
To the end of the stem 124, inside the box 122 are secured the several (preferably
four as shown) arms 127. To the arms 127 are secured bunches of wire which act
as brushes sweeping over the bottom of the box 122 when revolved, in the operation
of the machine, by the belt 126. In the bottom of the box 122 is formed a slot 128
approximately one-half the diameter, corresponding, preferably, to a chord of the
circular bottom. This groove is a continuation of the race 129 leading from the
tack box 122 to the removable tack delivering disc 131, which, in the forward
movement of the tack box frame 121, is given a positive motion of rotation in one
direction, as in the old machine, but which, in the backward movement of the
frame 121, is prevented from any retrograde rotation by the depending pins 132
secured to the disc 131 engaging with the spring pawl 133 secured to the frame 121
beneath the disc 131. The arms 127, with the attached brushes revolving
constantly, as they do while the machine is running, will sweep the tacks 123 over
the slot until eventually some of the tacks are in a position for their points to drop
down into the slot 128 when the motion of the supporting frame 121 will tend to
shake them down the inclined race 129 until they rest against another undelivered
tack. To prevent the brushes from disturbing the tacks already in the slot, the
bottom of the box is formed with an incline and an abrupt shoulder just forward of
the slot 128, the heads of the tacks, when in the slot, resting just behind the
shoulder and the brushes riding over them from the incline. This is shown in
Fig. 21.
In my improved machine I have formed the tack pit 134, in the separable
jaws 135 of the tack delivering bar 136 (see Figs. 27 and 28), cylindrical, of a
diameter corresponding to the size of the head of the tack 123, with the bottom
slightly conical to center the point of the tack, as shown in Fig. 27. The advantage
of this form of pit over the old conical form is that the vertical wall of the pit acts
as a guide for the tack when it is being driven into the leather, until it is almost
completely driven, steadying and directing the tack so as to keep it perpendicular,
a result not obtained by the old form.
My improved form of folder 137 is illustrated in Figs. 23, 24, 25 and 26. The

page_text: piece 137, which is secured to the folder bar is formed with two projecting end
portious 138, 139 somewhat separated. One of these, the left hand one 138 (facing
the machine) is formed with a laterally projecting lip 141, which extends approxi-
mately one-half across the space between the two projecting end portions of
fingers 138, 139. The space between the fingers 138, 139 is occupied by the flat
spring piece 142 overlapping the transversely projecting lip piece 141, which is
secured at the back end to the piece 137 and it is formed with a longitudinal slot 143
through which the tack is driven into the leather. The folder illustrated in
Figs. 29, 30, 31 and 32 is similar in essential features of construction and operation
to that just described. The spring piece 142 is replaced by the corresponding
transversely projecting overlapping piece 142" which is pivotally secured at its
forward end to the forward end of the projecting end portion 139 adapting it to be
raised, in the operation of the machine, by the leather of the upper when it is
bunched at its back end. The overlapping piece 142 is normally pressed down by
the flat spring 142, which is rigidly secured to the piece 137. The folder as a
whole is secured, as in the machine the subject of the Patent already referred to, to
a bar to which is given a sliding backward and forward movement, practically
similar to that therein shown and described except that, with the present form of
folder, a more extended forward movement, subsequent to the driving of the tack,
is necessary for the folder to clear itself, and its office is the same. The forward
edges of the spring 142 and piece 142" and of the lip 141 are bevelled transversely
relative to the folder as a whole, forming the V-shaped opening between them.
In the operation of the machine, the office of the folder is to fold down the
leather of the upper after it has been stretched by the pinchers, as already
described, and lay it flat preparatory to its being tacked down. The peculiar
advantages of folder are these that when the leather of the upper is creased, as
around the toe, instead of laying the leather in bunched folds, as illustrated in
Fig. 33, it will make overlapping folds of the same corresponding to the hem
formed by a hemmer, as illustrated in Fig. 34, enabling the tack to be driven into
the fold, so as to effectually secure the several layers of the leather. See the
position of the tack 123 relative to the leather in the fold as shown in Figs. 33
and 34, respectively.
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. In a lasting machine, the combination with an independent laterally movable
head stock carrying the gripping jaws, a guide rest for the last rigidly secured
to the head stock, and means substantially as described for moving said head stock
laterally.
2. In a lasting machine, the combination with the frame, of guide ways thereon,
a head stock slidingly mounted on said ways, means for actuating said head stock,
a guide rest for the last secured to said head stock and moving therewith, and
lasting mechanism, substantially as and the purposes described.
3. In a lasting machine, the combination with the frame, of guide ways thereon,
a head stock slidingly mounted thereon and arranged to move laterally, a cam,
suitable intermediate connections between said cam and head stock for moving
said head stock laterally, and lasting mechanism, substantially as and for the
purposes described.
4. In a lasting machine, the combination with a cam, of a rock arm engaging
therewith, a horizontal shaft on which said rock arm is mounted, a slotted arm on
the opposite end of the horizontal shaft, a pivoted bar provided with a slot in its
lower member, a link on its upper member, a laterally movable heau-piece, to which
said link is attached, a movable pivoted pin passing through the slots in the lower
member of the pivoted bar, and rock arm and lasting mechanism, substantially as
and for the purposes specified.
5. In a lasting machine, the combination with the laterally movable head stock,

page_text: link and pivoted bar provided with a slot in its lower member, of a horizontally
journalled rock shaft, rock arms on said shaft which are provided with a slot and
roller respectively, a cam with which the roller on one of the rock arms engages, a
pivot pin passing through the slots of the rock arm and pivoted arm, means for
adjusting said pivot pin, and lasting mechanism, substantially as and for the purposes
specified.
6. In a lasting machine, the combination with the frame, of guide ways thereon,
a head stock slidingly mounted on said guide ways, means for reciprocating the
head stock laterally, suitable connections for adjustably limiting the throw of said
head stock, and lasting mechanism, substantially as and for the purposes described.
7. In a lasting machine, the combination with the frame, of guide ways thereon,
a laterally movable head stock slidingly arranged on said ways, an independently
movable gripper carrier mounted on the head stock, and lasting mechanism, substan-
tially as and for the purposes described.
8. In a lasting machine, the combination with the frame, of guide ways thereon,
a laterally movable head stock mounted on the ways, an independently movable
gripper carrier mounted on the head stock, and vertically reciprocating gripper
jaws mounted in the gripper carrier, substantially as
and for the purposes
described.
9. In a lasting machine, the combination with the frame, of guide ways thereon,
a laterally movable head stock mounted on said ways, a gripper carrier mounted on
the head stock, vertically reciprocating gripper jaws mounted in the gripper carrier,
and means for actuating the said parts independent of each other, substantially as
and for the purposes described.
10. In a lasting machine, the combination with the frame, of guide ways thereon,
a laterally movable head stock mounted on said ways, means for limiting the throw
of said head stock, a gripper carrier pivotally mounted on the head stock and
arranged to move backward and forward, a rotatable and vertically reciprocating
gripper shaft mounted in the carrier, and suitable means for actuating the said parts,
substantially as and for the purposes described.
11. In a lasting machine, the combination with the frame, of guide ways thereon,
a laterally movable head stock on said ways a guide rest for the last secured to said
head stock, a gripper carrier and gripping jaws pivotally secured to said head stock,
a retaining finger fixedly mounted on the frame, and means for actuating said parts
independently, substantially as and for the purposes described.
12. In lasting machine, the combination of a gripper carrier, of a shaft
provided with gripping jaws mounted therein, a collar on said shaft, a sleeve loosely
mounted on said shaft said sleeve being provided with a collar, pivoted levers
engaging the collars, and adapted to raise and lower the shaft and sleeve, a toggle
joint connection between said levers, adapted to separate the same, and means for
raising the levers simultaneously, substantially as and for the purposes specified.
13. In a lasting machine, the combination with the gripper carrier and its
gripper shaft, of a sleeve on said shaft, revoluble collars on said shaft and sleeve,
pivoted levers engaging said revoluble collars, a toggle joint connection between
said levers, a second lever provided with a downward extension pivoted on one of
the aforesaid levers, a block mounted in the downward extension, a rod secured to
the toggle and passing through said block, a stirrup pivotally mounted in the
gripper carrier, and slidingly secured on said rod, a spring interposed between the
base of the stirrup and toggle, and means for actuating said secondary lever,
whereby the gripper shaft and sleeve are raised simultaneously and with different
speed, substantially as and for the purposes specified.
14. In a lasting machine, the combination with the gripper carrier and its
gripper shaft, of a sleeve loosely mounted on said shaft, levers engaging said shaft
and sleeve, a toggle joint connection between said levers, a pivoted stirrup, a spring
interposed between said stirrup and toggle joint, and means on one of the levers for
controlling the movement of the toggle through the medium of the spring, substan-
tially as and for the purposes specified.

page_text: 15. In a lasting machine, the combination with the laterally movable head stock,
of a gripper carrier mounted thereon, a rotatable vertically reciprocating gripper
shaft mounted in said carrier, jaws on the lower end of said shaft, a sleeve
surrounding the upper portion of the jaws and loosely mounted on the shaft, and a
toggle joint connection between said shaft and sleeve, substantially as and for the
purposes described.
16. In a lasting machine, the combination with the frame, of guide ways thereon,
a laterally movable head stock on said ways, a gripper carrier pivotally mounted on
said head stock, a gripper shaft mounted in said carrier, a sleeve on said shaft
adapted to encircle the gripping jaws, a toggle joint connection between said shaft
and sleeve, and means for rotating the shaft, substantially as and for the purposes
described.
17. In a lasting machine, the combination with the guide ways, a laterally
movable head stock thereon, a gripper carrier on the head stock, gripper jaws
secured to a shaft mounted in the gripper carrier, a retaining finger, and a folding
arm adapted to lay the fold for the reception of a tack, substantially as and for the
purposes described.
18. In a lasting machine, the combination with the guide ways and laterally
movable head stock, of a gripper carrier, a gripper shaft mounted therein, means
for actuating said parts, a folder arm adapted to lay the folds, said arm being
provided with prongs and spring lips to retain the fold in its position, a tack
delivering bar arranged to be projected above the folder arm, means for auto-
matically feeding the tacks to said bar, and a plunger for driving the tacks home,
substantially as and for the purposes described.
19. In a lasting machine, the combination with the guide ways and laterally
movable head stock secured thereon, a gripper carrier on said head stock, jaws
mounted in said gripper carrier, a folder arm consisting of two spring prongs
provided with lips arranged to receive the leather and lay the folds, a divided tack
delivering bar composed of spring members, tack feeding mechanism, a plunger, a
tack box provided with brushes arranged to brush the tacks into the race way, and
suitable mechanism for actuating said parts, corelatively, substantially as and for
the purposes specified.
20. In a lasting machine, the combination with the bifurcated folder arm, of a
lip formed on the underside of one of the prongs, and a yielding lip overlapping
said former lip, substantially as and for the purposes specified.
21. In a lasting machine, the combination with the bifurcated folder arm, having
a lip on one of its prongs, of a spring governed lip contacting with the lip in the
prongs, said spring governed lip having a tack opening in its shank, substantially
as and for the purposes specified..
Dated the 12th day of April 1892.
PHILIP M. JUSTICE,
Associate Agent.