the Surfaces of Rollers, Pulleys, and Drums.
Year: 1887

page_text: Date of Application, 22nd Apr., 1887
Complete Left, 21st Jan., 1888
Complete Accepted, 24th Feb., 1888
the Surfaces of Rollers, Pulleys, and Drums.
I JOHN SMITH of No. 7 Causeway Halifax, Yorkshire, Roller Coverer, do hereby
declare the naturo of this invention to be as follows:-
The object of my invention is to stretch and secure leather onto the surface or
perhiphery of rollers, pulleys, drums, and the like whether they are composed of metal
or of wood. Hitherto there has been some difficulty in stretching and attaching the
ends of leather onto cylindrical surfaces, especially in the case of iron surfaces
which however has been done by boring holes in the surface of the roller which holes
are afterwards filled in with wood pegs in which to drive nails to hold the ends of the
said leather.
According to my invention I place the axle of the roller loosely in suitable hearings,
I then place one end of the leather onto the roller which is held there by means of a
hinged bar provided with short pegs for entering the said leather and holding it
firmly in position. A hinged rod capable of being lengthened or shortened according
to requirements, is employed, one end of which is placed against the hinged pegged
bar for holding the bar and leather in position, and when this is done the other end of
the leather is taken hold of by a pair of nipping jaws, attached to the end of a chain
or rod which by means of suitable gearing, the said jaws are caused to pull at the
leather and stretch it onto the surface of the pulley to any degree of tightness; when
this is done another hinged pegged bar is brought to bear upon the end of the
leather temperally held by the jaws, such pegged bar after being fixed by a pin or
other means, holds the leather in position and allows the jaws to release its hold of the
leather so that the ends can be joined or spliced in the ordinary manner; and in
order that the pegged bars may be removed at once from holding the leather, so that
the pulley can be removed from its position, the joined ends of the leather are held
together by one or more short plates also having pegs on the underside which aro
inserted into the joined end of the leather and allowed to remain there until the
cement is dry. This method of stretching leather onto pulleys is very quickly and
effectively performed and ensures that the stretch does not take place in any single
part of the leather but from end to end, and this arises in consequence of the pulley

page_text: resting in loose bearings as I find that when the jaws aro pulling at the leather that
the pulley partially rotates, by which means the leather is stretched from end to end.
The apparatus above set forth enables me to stretch leather upon surfaces whether
they comprise pulleys or solid rollers without arins, and by using the short pegged
plates for holding together the spliced ends of the leather; I can remove and dispenso
with the hinged pegged bars which originally held the ends of the leather, conse-
quently I only require one apparatus whereas according to some methods a set of
tools is required for each pulley until the cement has set.
the Surfaces of Rollers, Pulleys, and Drums.
I, JOHN SMITH of No. 7 Causeway Halifax, Yorkshire, Roller Coverer, do hereby 1
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 object of my invention is to stretch and secure leather onto the surface or
periphery of rollers, pulleys, drums, and the like, whether they are composed of inetal
or of wood. Hitherto there has been some difficulty in stretching and attaching the 2
ends of leather onto cylindrical surfaces, especially in the case of iron surfaces, which,
however, has been done by boring holes in the surface of the roller, such holes being
afterwards filled in with wood pegs in which to drive nails to hold the ends of the
said leather.
According to my invention I place the axle of the roller loosely in suitable bearings;
I then place one end of the leather onto the roller, which is held there by means of a
hinged bar provided with short pegs for entering the said leather and holding it
firmly in position. A hinged rod capable of being lengthened or shortened according
to requirements is employed, one end of which is placed against the hinged pegged
bar for holding the said bar and leather in position, and when this is done the other
end of the leather is taken hold of by a pair of nipping jaws attached to the end of a
chain or rod, and by means of suitable gearing the said jaws are caused to pull at the
leather and stretch it onto the surface of the pulley to any degree of tightness; when
this is done, another binged pegged bar is brought to bear upon the end of the

page_text: leather temporarily held by the jaws, such pegged bar after being fixed by a pin or
other means holding the leather in position and allowing the jaws to release their hold
of the leather so that the ends can be joined or spliced in the ordinary manner; and
in order that the pegged bars may be removed at once from holding the leather so
that the pulley can be removed from its position, the joined ends of the leather are
held together by one or more short plates also having pegs on the underside, which
are inserted into the joined ends of the leather and allowed to remain there until the
coment is dry.
In order that my invention may be more fully understood I herein make reference
to the accompanying sheet of Drawings, shewing my improvements applied to a
machine for stretching and securing leather onto the surfaces of rollers, pulleys, and
drums. Fig. 1 is side elevation of the machine. Fig. 2 plan view, and Fig. 3 end
elovation. A is the framework of the machine at the rear of which is mounted the shaft a
to which rotary motion is given by means of handle B, such rotary motion being com-
municated by pinion C to spur wheel D mounted on shaft b; on this shaft 6 is a disc E
provided with a feather or projection which takes into a corresponding groove formed
in the shaft, so that the said disc may bo moved laterally to any position between the
sides of the machine. One end of a chaine is connected to a plate bolted to the
disc E, the opposite end of the said chain being secured to a pair of nipping jaws F.
The rollers, pulleys, or drums G are placed in loose bearings & formed in the sides of
the machine, or if the shaft of the said rollers, pulleys, or drums, is not sufficiently
long to reach across the machine (as shewn in the Drawings) a moveable bearing e
is employed, one end thereof being placed on the stud and the opposite end resting
on the floor or bottom of the machine. I also employ two rods and having
curved or rounded ends which fit onto the shaft of the pulleys G so that by means of
thumbscrews the said rods can be drawn down any distance required for the purpose
of holding the said shaft in its bearings and preventing oscillation or vibration of the
pulleys.
A piece of leather i, of sufficient length to cover the surface of the pulley, and
coated with cement in the ordinary manner, is now taken, and one end thereof placed
on the upper part of the pulley; the bar or lever H, hinged at k and having a number
of metal pegs rivetted or otherwise fastened to the underside thereof, is then lowered,
and the pegs thereon pressed a little way into the leather, when a pin is forced
through a corresponding hole in the bracket bolted to the framework, thereby
preventing any upward movement of the bar and withdrawal of tho pegs from tho
leather.
To make the hinged bar or lever H perfectly rigid and prevent any movement
thereof in the direction in which the leather is stretched onto the pulley, I employ a
rod m entering the hinged rod n, and which may be lengthened or shortened according
to the various sizes of rollers or pulloys being covered, by means of the nut or thumb-
screw o; the extremity of this said rod m being placed against the hinged bar or
lever Hand made fast by the nut or thumbscrew o. The piece of leather i is now
passed around the pulley G, and the loose end thereof placed between the nipping
jaws F, which, for further security, are provided on their inner surfaces with pegs or
pins and corresponding recesses. The attendant now turns the handle B and rotates
the disc E in the direction of the arrow p, thereby taking up the chain and stretching
the leather onto the surface of the pulley, but as the pulley rests in loose bearings, it
follows that as the nipping jaws are pulling at the leather the friction on the pulley
will cause it to partially rotate and thereby stretch the leather equally from one end
to the other to any degree of tightness required. When this is accomplished a second
hinged bar or lever J, also provided with pegs on the underside thereof, is lowered
(see part side elevation Fig. 4) and the pegs pressed into the end of the leather held
by the nipping jaws, and when made secure by means of the pin q the machine is
rotated in the opposite direction to that indicated by the arrow p, paying out the
chain c so that the nipping jaws may be opened, and the end of the leather released.
The ends of the leather are now joined together in the ordinary manner, and in order
that the pegged bars or levers H and J may be removed at once from holding the

page_text: '
leather, so that the pulleys can be taken from the machine, or their relative positions
changed, 1 employ one, two, or more short plates r, also having pegs or pins on the
underside, which are inserted into the joined ends of the leather, as shown in Fig. 5,
and allowed to remain thero until the cement is dry.
K is the ordinary ratchet wheel mounted on the shaft a, which by means of the
pawls prevents any backward movement of the gearing and parts connected therewith
when the machine is stopped.
The
This method of stretching leather onto pulleys is very quickly and effectively
performed, and ensures that the stretch does not take place in any single part of the
feather, but from end to end, and this arises in consequence of the pulley resting in
loose bearings, as I find that when the jaws are pulling at the leather the pulley
partially rotates, by which means the leather is stretched from end to end. Any
perceptible slackness at the end of the leather will be taken up by the contraction
of the said leather after the pulley has been removed from the machine.
apparatus above set forth enables me to stretch leather upon surfaces whether they
comprise pulleys or solid rollers without arms, and by using the short pegged plates
for hokiing together the spliced ends of the leather I can remove and dispense with
the hinged pegged bars which originally held the ends of the leather, consequently I
only require one apparatus, whereas according to some methods a set of tools is
required for each pulley until the cement has set.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
Firstly. In a machine for covering rollers with leather, the mounting of such rollers
in loose bearings in manner and for purposes substantially as described.
Secondly. In combination with a roller mounted in loose bearings, of a hinged
pegged bar or lever for holding one end of the leather whilst being stretched,
substantially as described.
Thirdly. In combination with a roller mounted in loose bearings, of a second
hinged pegged bar or lever employed to hold the leather in position and permit the
jaws to release their hold of the said leather.
Fourthly. The use of detached pegged plates employed for the purpose of holding
both ends of the leather on the periphery of the roller until the cement is set.
Dated this 20th day of January 1888