Improvements in the Construction of Tension Pulleys of Spinning and like Machines.
Year: 1890

page_text: Date of Application, 28th Apr., 1890
Complete Specification Left, 5th Jan., 1891-Accepted, 7th Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Tension Pulleys of Spinning
and like Machines.
1. JOSEPH SMITH, of Number 24, Market Street, Keighley, in the County of
York, Sheet Metal Worker, do hereby declare the nature of this invention to be as
follows, that is to say:
It relates to improvements in the construction of tension pulleys of spinning and
like machines whereby the strength and durability thereof is greatly enhanced.
As is well known these tension pulleys are mostly formed or constructed of sheet
metal and as heretofore arranged the sheet metal pieces employed in the said
construction, are very extensively dependent upon the adhesiveness of solder for
enabling them to withstand the varied forces or pressures acting upon one part or
another of same during their several operations, however in accordance with this
my said invention I so construct the discs forming the sides of these pulleys that
they shall rigidly hold the part forming the peripheral rim, to withstand any forces
acting in any ordinary way upon said rim and converging in the centre of the
pulley, while at the same time said rim holds and prevents the sides from being
pressed inwardly towards each other or one another.
To attain this a lateral flange is formed upon each of the discs, and this flange is
swaged or spun so that a radial bead or rib is formed in connection with it. The
peripheral rim fits over the flange part by which it is held, while by the head on
said part being in contact with it laterally, the discs are held in this direction.
Dated this 26th day of April 1890.
}
COMPLETE SPECIFICATION.
Improvements in the Construction of Tension Pulleys of Spinning
and like Machines.
I, JOSEPH SMITH, of Number 24, Market Street, Keighley, in the County of
York, Sheet Metal Worker, 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, that is to say :-
It relates to improvements in the construction of tension-pulleys of spinning and
like machines whereby the strength and durability thereof are greatly enhanced.
As is well known these tension-pulleys are mostly formed or constructed of sheet
metal and as heretofore arranged the sheet metal pieces employed in the said con-
struction, are very extensively dependent upon the tenacity or adhesiveness of
solder for enabling them to withstand the varied forces or pressures acting upon
one part or another of same during their several operations, however in accordance
with this my said invention I so construct the discs forming the sides of these
pulleys that they will rigidly hold the part forming the peripheral rim to with-
standing any forces acting in any ordinary way upon said rim and converging in the
centre of the pulley, while at the same time said rim holds and prevents the sides
from being moved inwardly towards each other or one another by any ordinary.
pressure to which they may be exposed or that may act upon them when in use.
In order that my said invention may be more readily understood, I have here-
unto appended a sheet of drawings illustrative thereof the same being referred to in
the following description.

page_text: Figs. 1 and 2 are sectional side and sectional edge views of my form of tension-
pulleys.
The object of this invention is attained by forming a lateral-flange a upon each-
disc. This lateral-flange a is swaged or spun so that a radial bead or rib c is
integrally formed in connection with it as shewn by Fig. 2.
The peripheral rim d fits over the lateral-flange a and is thus held by said
Hange a to withstand any forces (converging in the centre of the pulley) that may
act upon it (said rim d), while by the bead e being in lateral contact with said rim d
the discs bb are held in that direction.
After the pieces bb' and d are joined to each other as above described, a small
quantity of solder is employed to attach them together as is the case in the well
known methods of construction heretofore followed, although this solder adds but
little if any strength thereto for practical purposes or for withstanding any of the
forces or pressures that may act thereon when same are in use.
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 :-
1. In the formation or construction of tension-pulleys the employment of discs of
sheet metal having lateral flanges with radial ribs or beads for holding, or being
held by the peripheral rim of said pulleys substantially as specified.
2. In the formation or construction of tension-pulleys the use or employment of
discs, such as the discs and, having integrally formed lateral Hanges a and
radial rims or beads c against the latter of which the peripheral rim d is to abut,
substantially as herein described.
Dated this 3rd day of January 1891.
JOSEPH SMITH.
Per Samuel Hey,
Agent.