New or Improved Belting for Transmitting Power.
Year: 1896

page_text: Date of Application, 28th July, 1896
Complete Specification Left, 12th Nov., 1896-Accepted, 12th Dec.. 1896
PROVISIONAL SPECIFICATION.
New or Improved Belting for Transmitting Power.
I, DANIEL JOHN CROSBY, of Black Oak Farm, Kadina, in the Province of South
Australia, Farmer, do hereby declare the nature of this invention to be as follows:-
This invention is for the purpose of transmitting power from one shaft, spindle,
or pulley wheel to another. It may be applied to various kinds of machinery and
apparatus in which the transmission of power by means of belting is desired or
required, and will take the place of the flat, cord, or chain belting at present used,
being more economical and durable. Owing to the elasticity of a belt made
according to my invention, it may be used without alteration upon wheels of
different diameter to increase or decrease the speed of the driven wheel. This
new or improved belting may either be made as or in one endless piece, or with
a joint or joints which will enable the belting at such joint or joints to be
connected and disconnected with great facility.
The essential feature of my invention consists in the application and use for
belting purposes of a length of metal spring which may either be or consist of
suitable and suitably tempered coiled wire or coiled metal ribbon or suitable and
suitably tempered crimped wire or crimped metal ribbon, but preferably coiled
wire, all as herein described.
In order that my invention may be clearly understood, I will describe the same
with reference to the accompanying drawings, in which :-
Figures 1 and 2 represent a coil spring belt A upon pulleys B with grooves B¹,
one of the pulleys being shown partly in section. In Figure 1 the pulleys B are
formed with plain grooves B', while in Figure 2 the pulleys are formed with
ridges B in the grooves B'.
Figures 3 and 4 represent a crimped spring belt A upon flat pulleys B with
rims B, portion of the rim of one of the pulleys being broken away. The belt A
represented in Figure 3 lies flat upon the pulley face, the laps extending from side
to side of the face, while that shown in Figure 4 is in contact with the pulley face
only along the points of the laps, unless ridges are employed.
Figure 5 represents a joint formed by a central core with pins.
Figure 6 represents a book and eye joint.
:
Figure 7 is a cross section of the rim showing the form of groove B' which I..
prefer to use.
Figure 8 is a similar view showing wearing strips C let into the sides of the
groove B'.
The pulley wheels for a coil spring will be formed with peripheral grooves and
for a crimped spring flat with flanges. My spring belting is, as already stated, of
metal, preferably of steel, suitably tempered, or, for fine work, brass or other material
may be employed.
The coils or laps may be more or less open, according to circumstances, and a
wide variation in this respect is admissible.
The spring belt will be made so that before being placed in working position its
normal length will be somewhat less than that of a leather or non-elastic belt for
the same purpose.
It will be given sufficient elasticity in the manufacture or in
the tempering to allow it to be placed ou the pulley wheels and then fit snugly

page_text: into the peripheral grooves thereon, and when in position, it will be under a certain
degree of tension, according to the work to be accomplished.
It will be evident that the size of the wire or strip of material and the diameter
and pitch of the coils or the pitch of the laps, as well as the temper, will be varied,
according to the size of the pulley wheels and the work to be accomplished. In
ordinary cases the spring belt will work efficiently in plain grooved pulleys, but
in order, if necessary, to increase the grip or bite of the belt the grooves may be
formed with ridges or other appropriate means for increasing the grip of a metal
surface.
The pulley wheels may be of iron, wood, or other material. In the case of metal
wheels, wearing strips of wood, leather, or other suitable material, may be inserted,
as shown in Figure 8, the said strips being affixed by cement or other suitable
means.
The two ends of the spring must be joined so as to form a belt of regular
quality. This may be effected, either by welding, or scarfing and brazing, or by a
central core fitted with pegs around which the two end coils of the spring are
turned, or a joint may be made by forming a hook on one end, central to the coil,
and an eye on the other end, also central to the coil and bent back within the
coil so that when the hook engages the eye the regularity of the coil is maintained.
These joints or fastenings should be formed before the spring belt is tempered,
so as to secure uniformity of temper throughout.
Old leather belts may be used up by shortening and inserting a connecting piece
consisting of one or more of the springs as herein described of suitable length and
strength attached to the ends of the leather belting.
It will be obvious that two or more spring belts might be used side by side
and other modifications of form and detail of construction will be required and may
be employed without departing from the principle of my invention.
New or Improved Belting for Transmitting Power.
I DANIEL JOHN CROSBY of Black Oak Farm, Kadina in the Province of South
Australia, Farmer, do hereby declare the nature of my invention and in what manner
the same is to be performed to be particularly described and ascertained in and by
the following statement :-
This invention is for the purpose of transmitting power from one shaft, spindle, or
pulley wheel to another. It may be applied to various kinds of machinery and
apparatus in which the transmission of power by means of belting is desired or
required and will take the place of the flat, cord or chain belting at present used,
being more economical and durable. Owing to the elasticity of a belt made
according to my invention, it may be used without alteration upon wheels of
different diameter to increase or decrease the speed of the driven wheel. This new or
improved belting may either be made as or in one endless piece, or with a joint or
joints which will enable the belting at such joint or joints to be connected and
disconnected with great facility.
The essential feature of my invention consists in the application and use for belting
purposes of a length of metal coil spring which may either be or consist of suitable
and suitably tempered coiled wire or coiled metal ribbon, but preferably coiled
wire.

page_text: with reference to the accompanying drawings, in which :
Figures 1 and 2 represent a coil spring belt A upon pulleys B with grooves B',:
one of the pulleys being shown partly in section. In Figure 1 the pulleys B are:
formed with plain grooves B' while in Figure 2 the pulleys are formed with.
ridges B' in the grooves B¹.
Figure 3 represents a joint formed by a central core with pins.
Figure 4 represents a hook and eye joint.
Figure 5 is a cross section of the rim showing the form of groove B which
I prefer to use.
Figure 6 is a similar view showing wearing strips C let into the sides of the
groove-Bl.
The pulley wheels for a coil spring belt will be formed with peripheral grooves..
My spring belting is, as already stated, of metal, preferably of steel, suitably
tempered, or, for fine work, brass or other material may be employed.
The coils may be more or less open, according to circumstances, and a wide-
variation in this respect is admissable.
The spring belt will be made so that before being placed in working position its
normal length will be somewhat less than that of a leather or non-elastic belt for
the same purpose. It will be given sufficient elasticity in the manufacture or in
the tempering to allow it to be placed on the pulley wheels and then fit snugly
into the peripheral grooves thereon, and when in position, it will be under a certain.
degree of tension according to the work to be accomplished.
It will be evident that the size of the wire or strip of material and the diameter-
and pitch of the coils as well as the temper, will be varied, according to the size-
of the pulley wheels and the work to be accomplished. In ordinary cases the
spring belt will work efficiently in plain grooved pulleys, but in order, if necessary,
to increase the grip or bite of the belt the grooves may be formed with ridges or
other appropriate means for increasing the grip of a metal surface.
The pulley wheels may be of iron, wood or other material. In the case of metal
wheels, wearing strips of wood, leather, or other suitable material may be inserted,
as shown in Figure 6, the said strips being affixed by cement or other suitable.
means.
The two ends of the spring must be joined so as to form a belt of regular.
quality. This may be effected, either by welding, or scarfing and brazing or by a
central core fitted with pegs around which the two end coils of the spring are
turned, or a joint may be made by forming a hook on one end central to the coil,
and an eye on the other end also central to the coil and bent back within the-
coil so that when the hook engages the eye the regularity of the coil is maintained.
These joints or fastening should be formed before the spring belt is tempered.
so as to secure uniformity of temper throughout.
It will be obvious that two or more spring belts might be used side by side in-
separate grooves and other modifications of form and detail of construction will be.
required and may be employed without departing from the principle of my
invention.
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. The mode of transmitting power by the application and use of an endless coil
spring as a belt with or upon suitable or suitably formed pulley wheels substantially
as described.
2. A driving belt, consisting of an endless coil spring of the length required to.
pass around and give the necessary tension upon two or more pulley wheels as and
for the purpose set forth.
3. A driving belt formed by joining together two ends of a suitable length of
coil spring as described and for the purpose set forth.

page_text: 4. A driving belt of the kind, set forth in combination with pulley wheels
peripherally grooved or otherwise suitably formed and with or without ridges or
other means of increasing the bite or hold of the belt, substantially as and for the
purpose set forth.
Dated this 12th day of November 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.