Year: 1886

page_text: Date of Application, 4th June, 1886.
Complete Left. 3rd Mar., 1887.
Complete Accepted, 5th Apr., 1887.
I, AMBROSE TRASK, of 18 Sandbourne Road Brockley, in the County of Kent,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to the construction of metal pulleys, drums and wheels split or
solid, and has for its object the making of the same in a cheap and simple manner.
I propose to use sheet metal of the required thickness, which metal is cut and
stamped, or formed in dies used in stamping presses, or stamping hammers, or other
suitable machinery necessary for the purpose.
By the ordinary method of construction, pulleys, drums and wheels are either cast,
or, when made of wrought iron or steel are made up of several parts riveted, screwed,
or otherwise attached to each other; by this invention I obtain an equally light and
strong pulley, drum, or wheel, and being made in dies are true on the rim or. flange,
thus doing away with turning or grinding.
I cut a disc or circle of sheet metal of the desired size, and sink or draw up in.dies
so much of the outside of the disc, or circle, that is necessary to form the width of the
flange, or rim required on the pulley, drum, or wheel. I also propose to cut, or cut
and punch, the hole in centre of disc or circle to form the boss or hub, or a cast or
wrought metal boss, hub or plates may be combined so as to form a strong boss or
hub, or the pulley, drum, or wheel may be placed in a mould or receptacle and a.boss
or hub cast in place.
I may also rivet or otherwise attach two or more of the flanged discs, or circles
together, and attach the boss or hub in the same manner.
If necessary I can lighten the pulley, drum, or wheel by stamping or cutting pieces
of any convenient shape from the sides of same, or strengthen pulley, drum or wheel
by flanging, sinking or corrugating same.
Daind this 4th day of June 1886

page_text: I AMBROSE TRASK, of 18 Sandbourne Road, Brockley in the County of Kent,
Engineer, do hereby declare the nature of this invention and in what manner the
same is to be formed, to be particularly described and ascertained in and by the
following st _ ent:-
--
My invention relates to the construction of metal pullies drums and wheels, split
or solid and has for its object the making of the same in a light cheap and simple
manner.
For this purpose I form the pulleys wholly or partly of sheet metal of suitable
thickness which metal is cut and stamped or formed in dies used in stamping presses
or stamping hammers or other suitable machinery necessary for the purpose. By the
ordinary method of construction pulleys drums and wheels are either cast or when
made of wrought iron or steel are made up of several parts, rivetted, screwed or
otherwise attached to each other; by my invention I obtain an equally light and
strong pulley, drum or wheel which owing to the manner in which it is made is true
on the rim or flange thus dispensing with the operations of turning or grinding.
In carrying out my Invention I cut a disc or plate of sheet metal of a size varying
according to the diameter of pulley and width of rim required and sink or draw up
the same in dies, so much of the outside of the disc or circle as is necessary to form
the flange or rim. I may also cut or punch the hole in centre of disc or plate to
form the boss or hub or a cast or wrought metal boss hub or plates may be combined
so as to form a strong boss or hub or the pulley, drum or wheel may be placed in a
mould or receptacle and a boss or hub cast thereon in its proper place.
I may also rivet or otherwise attach two or more of the flanged discs or plates
together and attach the boss or hub in the manner above described. If necessary
I can lighten the pulley drum or wheel by stamping or cutting out pieces of any
convenient shape from the sides of same or strengthen the pulley drum or wheel by
flanging, sinking or corrugating same.
And in order that my invention may be more fully understood I have hereunto
annexed a sheet of drawings illustrative thereof.
Figure 1 represents one form of my invention consisting of a sheet metal pulley A
to which is attached a boss B by means of screws C. Instead of being fastened by
screws the boss may be rivetted or it may be cast onto the pulley as previously
specified.
Fig. 2. shows a stronger construction of pulley than is shown in Fig. 1. This
consists of two narrow pullies A A placed back to back and secured by rivets D.
Screws may also be used and bosses or hubs B secured as specified in reference to
Fig. 1. or in any other convenient manner. Pullies made in this manner may have
convex or grooved rims by altering the angle of the flanges. Fig. 3 shows a guide
pulley, and Fig. 4 a railway wheel constructed according to my invention. I am

page_text: aware that pullies made of sheet metal have been in common use for a considerable
period but such have only been adapted for light work whereas mine are adapted for
all kinds of work.
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 :-
1st. As a new article of manufacture a pulley, (split or solid,) drum or wheel
formed from a single sheet of metal by punching drawing or stamping or one or more
of these processes and provided with a boss or hub in manner substantially as
specified.
2. In a new article of manufacture a pulley, drum or wheel formed by the com-
bination of two or more sheets of metal placed back to back and the addition thereto
of a boss or hub in manner substantially as specified.
1002
HUGHES & SON,
5, Chancery Lane, London, W.C.,
Agents for the Applicant.