Improvements in Leather Staking Machines.
Year: 1897

page_text: Date of Application, 14th Jan., 1897-Accepted, 6th Mar., 1897
COMPLETE SPECIFICATION.
Improvements in Leather Staking Machines.
We, JAMES CRAIG and FRANK FISHER SLOCOMB, both of No. 201 West
Third Street, Wilmington, Delaware, in the United States of America,.
Manufacturers, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
The invention consists of an improved construction of leather staking machines,
whereby we are enabled to effect an exact and delicate adjustment of pressure on
the leather which is being staked, while the machine is in motion.
It also consists of a novel arrangement of staking rolls, one of which is capable
of vertical and lateral adjustment according to requirements.
It also consists of novel means for effecting the adjustment of the staking jaws,
and at the same time permitting the operator to stand on both feet, the adjustment
being effected by means of the knee of the operator, and lifting devices actuated
thereby.
It also consists of a novel manner of cleaning the table or plate which assists in
effecting the desired adjustment.
It further consists of novel details of construction, all as will be hereinafter set
forth and specifically pointed out in the claims.
Figure 1 represents a side elevation of a leather staking machine embodying our
invention, a portion of the same being broken away.
Figure 2 represents on an enlarged scale, a plan view of the forward extremity
of the upper jaw, showing the manner of effecting the lateral and vertical
adjustment of one of the rolls carried thereon.
Figure 3 represents a section on line a, a, Figure 2.
Figure 4 represents a perspective view of the table or plate and the adjusting roll
employed, the same being shown in detached position.
Figure 5 represents a perspective view of a rod or shaft employed, having its
journals set eccentrically to its body."
Figure 6 represents on an enlarged scale, an end elevation of the shaft seen in
Figure 5
Figure 7 represents a front elevation of a portion of the housing seen in Figure 1,
showing the swivelling or retaining devices for the knee piece.
Figure 8 represents on an enlarged scale, a perspective view of the knee piece
seen in Figure 1, and
Figure 9 is a detail shown in Figure 1.
Similar numerals of reference indicate corresponding parts in the several
figures.
Referring to the drawings:
1 designates the housing of the machine, the same being of the usual or desired
construction.
2 designates the connecting rod employed, a portion of the same being broken
away, it being of course understood that said connecting rod may be actuated or
reciprocated by means of a crank or other similar device, not shown.
3 designates a pin or pivot common to said connecting rod and to the plates 5,
the general contour of said plates being understood from Figure 1, and said plates

page_text: when in assembled position forming with their adjuncts a cross head 4, which
reciprocates in suitable slides, a detailed description of the latter being deemed.
unnecessary, since the same is old in the art, said cross head in practice being
preferably cast in one piece. 7 designates the upper jaw which is pivoted at 6 to
the plates 5; the rear portion of said jaw 7 being provided with a roller 9, which is
suitably supported and is adapted to contact with the cam S, which is carried by
the connecting rod 2, the lower jaw 7× being. actuated in substantially the same
manner and it being evident that by reason of the construction and arrangement of
the cams and their adjuncts, that when the parts are in the position seen in Figure 1,
the forward portion of the jaws will be caused to approach each other, and remain
in this position during the backward movement of the jaws, or in other words their
movement to the left, said jaws opening when at their extreme left hand portion,
and remaining open until at or near the end of their forward movement they reach
about the position seen in Figure 1, when they again close, the above construction
and operation being old per se, and forming no part of the present invention.
11 designates a rod or rods which have one end attached to the pin or pivot 3 in
the present instance, while their upper portions pass through the cross bar 3* upon
which one end of the spring 10 is adapted to abut, the other end contacting with
the washer 12, the tension being regulated by manipulating the nuts 12x.
13 designates the forward end of the upper jaw, the same having the plate 14
attached thereto, and held in position by means of the bolts 15. The forward
portion of said plate 14 is in the present instance widened as at 16, and has bolts or
hangers 17 passing therethrough, said bolts being held in position by means of the
shoulders 17, and the note 18, the lower portion of each of said bolts or hangers
being provided with a bearing 18* in which the journals 19 of the roller 20
revolves.
21 designates a plate which is supported upon the plate 14, the former plate
being provided with the cross piece 22, and the arms 23, said arms being provided
with the slots 24 through which pass the cap screws or threaded stems 25, said
stems each having the head 26, and the washers 27 thereon, by means of which the
arms 23 are held in juxtaposition with said plate 14, and provision is thus made for
enabling said arms 23 to be shifted laterally, in the manner indicated in dotted lines
in Figure 2.
28 designates threaded stems located in the forward portion of the arms 23, said
stems passing through said arms and being engaged on either side by the nuts 29
and 30, the lower portion of each of said stems being provided with a bearing 31,
in which the journal 32 of the roller 34 revolves, it being thus evident that the
roller 34 is capable of vertical adjustment by manipulating the nuts 29 and 30, as
well as lateral adjustment upon the manipulation of the cap screws 25.
32* designates a knife or blade which is attached to the forward portion of the
lower jaw 7, the latter having a pad or blade 34* located in proximity to said
blade 32*, the latter being somewhat longer than and located in advance of said
pad 34*.
33 designates the hide or skin which is to be staked, the same passing over a
breast beam or roller 33*, which is supported on stationary bearings in the forward
part of the machine.
35 designates a spring which has its free end bearing on the lower 7*, while its
outer end is attached to a suitable fixed point.
36 designates a plurality of arms which are provided with the hubs 37, the latter
having a bearing in the lower portion of the plates 5, said hubs having the
openings 38 located eccentrically thereto as indicated in Figures 1, 4 and 9, and
said arms, plates and lower jaws 7* being held in proper relation to each other by
means of the pin or rod 39, the latter being held in proper position by means of the
set screws 40.
41 designates a roller which is journalled in the lower portion of the arms 36, and
is adapted to travel on the plate or bed 42 which is movably supported, as will be
hereinafter explained.

page_text: 43 designates an upright plate or scraper which is attached to the arms 44, which '
latter are pivotally attached to the arms 36, the function of said scraper being to
keep the bed 42 always clear in advance of the roller 41.
46 designates an arm which is pivotally attached at 45 to the forward portion
of the bed 42, said arm being pivotally mounted at 47 on a suitable portion of the
housing 1.
49 designates the arm on which the rear portion of the bed 42 is supported,,
said bed being attached to said arm by means of the pin 48 while said arm is
mounted on the shaft 50 which has its journals located eccentrically to said shaft,
as will be understood from Figures 1, 5 and 6, said shaft 50 being held in proper
position by means of nuts 52, which latter are removed from Figure 1 for clearness
of illustration.
53 designates a cross piece, best seen in Figure 7, which has the depending
members 54 which are attached to the front of the housing 1.
55 designates a hub or block which is adapted to be supported ou said cross
piece 53, said hub having an opening 56 therethrough, through which a portion 57
of the threaded stem 58 passes, said stem being provided with a head 60, which
rests upon a shoulder 61 of the hub 55, the latter being thus held in the desired
position, and being freely rotated or oscillated, although any lateral or upward
movement is prevented by reason of the nuts 59, which engage said stems 58.
62 designates the upper inclined or cam face of the hub 55, the same being
adapted to contact with the inclined cam face 63 attached to the forward portion
of the table 42, best seen in Figures 1 and 4.
64 designates another lower cam face located on the upper portion of the hub 55,
the same being adapted to contact with the inclined or cam face 65 of the table 42,
best seen in Figure 4.
66 designates a plurality of arms extending in radial or other directions from
the hub 5, and connected with the plate 67, which latter is curved in the present
instance, and has the rods 68 projecting therefrom, which are adapted to be engaged
by the knee of the attendant or operator.
The operation is as follows:
The jaws 7 and 7× when at or near their extreme forward position appear
as seen in Figure 1, the knife 32x assuming a position intermediate the rollers 20
and 31.
The hide to be staked is indicated in dotted lines at 33, at the right of Figure 1,
and the same having been placed position and held between the body of the operator
and the beam or roll 33*, the jaws 7 and 7* are caused to move backwardly or to
the left, through the medium of the connecting rod 2, and the hide 33 being held
stationary by the attendant, it will be seen that the proper treatment will be
imparted thereto during the rearward movement of the rolls 20 and 34 and the
blades 34* and 32* the operator or attendant shifting the bide or skin as desired,
until every portion of the same has been treated or staked.. For certain classes of
work in which the hides are of greater or less thickness, it will be required to
adjust the distance between the rollers 34 and 20, which can be done by loosening
the stems or screws 25, and moving the arms 23 towards or away from the roller 20,
thereby imparting a lateral adjustment to the roller 34. The roller 34 is also
enabled to be vertically adjusted when desired, by manipulating the nuts 29 and 30,
and thus shifting vertically the stem 28 and consequently said roller 34.
The upward and downward movement of the jaw 7* can be adjusted with great
exactness during the operation of the machine without stopping the latter, by the
operator oscillating to the desired extent the knee piece 66* seen in Figures 1
aud 8. The desired oscillation is imparted by the knee of the operator, whereby
the contact of the inclined or cam surfaces will cause the table or bed 42 to be.
raised or lowered, and the adjustment of the rear portion of said table can be
readily effected by rotating to the desired extent the rod or shaft 50 having the
eccentric journals 51 located thereon in the manner described, the different extremes
of position which the rod 50 having its eccentric journals 51' may be caused' to

page_text: assume being indicated in Figure 6 the table 42 requiring no attention after being
once adjusted.
The elevation or depression of the table or bed 42 will cause a corresponding
movement to be imparted to the roll 41, and consequently a slight oscillation will
be imparted by reason of the eccentric bearings on the arms 36 to the lower
jaw 7, as will be understood from Figures 1 and 9, the extent of adjustment being
regulated with great exactness by means of the eccentric connections seen in
Figures 1 and 9.
It will of course be apparent that changes may be made by those skilled in
the art which will come within the scope of my invention and I do not therefore
desire to be limited in every instance to the exact construction I have herein shown
and described.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
:-
1st. In a leather staking machine, a plurality of rollers mounted on the
upper jaw thereof, one of said rollers being capable of lateral and vertical
adjustment.
2nd. In a leather staking machine, an upper jaw, a fixed roller mounted in
suitable bearings attached to said jaw, adjustable arms carried by the latter,
said arms supporting adjustable threaded stems, and a roller having bearings in
said stems.
3rd. In a leather staking machine, a lower jaw, an upper jaw having a plurality
of rollers journalled thereupon, one of said rollers being capable of lateral adjust-
ment, and said lower jaw having a plurality of upright blades attached thereto, one
of said blades occupying the space between said rollers.
4th. In a leather staking machine, an upper jaw having a plate attached
thereto, a roller journalled in bearings depending from said plate; slotted arms 23
having a cross piece 22, means for securing said arms to said plate, bearings
capable of vertical adjustment depending from said arms, and a roller journalled
in said bearings.
5th. In a leather staking machine, a cross head having upper, and lower jaws
pivotally mounted therein, means for reciprocating and for opening and closing
said jaws, a plurality of arms having hubs journalled in said plates, openings in
said arms located eccentrically in said hubs, a rod passing through said openings,
means for holding said rod in position, and means for raising and lowering one
of said arms.
6th. In a leather staking machine, a bed or table, arms pivotally attached
thereto and supported from the housing of the machine, an inclined or cam faced
projection depending from said table and adapted, to contact with a hub having
corresponding inclines thereon, and means for actuating said hub, in combination
with connections from said bed for adjusting the lower jaw of the machine.
7th. In a leather staking machine, a bed or plate movably supported, arms
common to said bed and to the housing of the machine, one of said arms having
a shaft passing therethrough, said shaft being provided with bearings eccentric
thereto, means for raising and lowering said bed, and connections from the latter to
the lower jaw of the machine for adjusting said jaw.
8th. In a leather staking machine, a cross piece, a hub supported thereupon,
said hub having an opening therethrough and a shoulder therein, a threaded stem
passing through said opening, and having a head adapted to engage said shoulder,
a plurality of cam faces on said hub, a table having a plurality of cam faces
thereon, arms extending from said hub and having a plate attached thereto, and
pins projecting from said plate, in combination with connections common to said
plate and to the lower jaw of the machine for adjusting said jaw without stopping
the operation of the machine.
9th. In a leather staking machine, a table suitably supported, means for raising

page_text: and lowering said table, a roller adapted to contact with the latter, connections.
from said roller to one of the jaws of said machine, and means for reciprocating
and opening and closing said jaws.
10th. In a leather staking machine, an upper and lower jaw, a cross head
therefor, a plurality of arms having hubs mounted in said cross head,.
openings in said hubs eccentrically located, a rod passing through said openings.
and the lower jaw of the machine, and means for raising and lowering said
arms.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicants..