US61554A - Henby spendelow - Google Patents

Description

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' ROBERT HENEAGE, GEORGE MiLsOM, AND HENRY sPENDELOw, OE BUFFALO, NEw- YORK.

Letters Patent No. 61,554, dated January 29, 1867.

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TO ALL WHOM IT MAY OONGERN:

Be it known that we, ROBERT HENEAGE, GEORGE MILsoM, and HENRY SPENDELOW, of the' city of Buialavn the county of Erie, and State of New York, have invented certain newf'and-useful improvements in Bands and Belts for communicating motion; and we do hereby declare that the followingiis a full and exact description thereof, reference being had to the accompanying drawings, making part of this specification, in which Figure l is a view in elevation representing our improvements. i

Figure 2 is a detached view of a pulleywith our improved wire cable, a portion of the pulley being shown as broken away to show its construction. i

Figure 3 is a side or face View of a wheel provided with our improved iron belt.

Like letters of reference designate corresponding parts in all the gures.

The'nature of our invention consists in the construction of driving-belts, for machinery, of annealed iron, rolled, drawn, or hammered'to the required thinness, as a substitute for the ordinary materials, such as leather, rubber, dec., and itvfurther consists in the employment of wire cables in` combination with a groovedfaced pulley, said groove being provided with a suitable iiexible or partially elastic lling for increasing the adhesion thereof.

As represented in the drawings, iig. 1 shows the application of these improvements'in both forms to a purpose which presents the most serious difficulties, as regards the situation 'and useof belts for communicating power,

viz, to driving the buckets of a grain elevator, A A being the upright wooden frame'; B is a driving-shaft pro-` vided with two drivinglpulleys C andD, in addition to the pulleys carrying the endless chain orr cable to which are attached4 the buckets E E. The upper shaft has corresponding pulleys lettered respectivelyoC" and D', and

their shaft B. The driving-belt Gr on pulleys C C consists of a strip of thin malleable iron reduced, by rolling,

drawing, or other suitable means, to that degree of thinness that itis suiciently flexible and pliant to run on the surfaces of the pulleys which are usually and preferably of cast iron, but may be of other suitable material; The faces of these pulleys are uncovered, the metallic strip coming in direct contact therewith so that the natural adhesion of the metal surfaces will prevent slipping of the belt upon4 the wheel.. iWe find by a series of practical experiments thaty the brous structure of a piece of 'ductile iron, when worked to that degree of com= pactnessthat results when reduced to thin'sheet or strap, is specially adapted to adhere under'slight pressure to the surface of cast iron 'having a porous andV crystalline structure, and this quality peculiarly adapts it to the purpose of driving-pulleys for communicating motion and power, as the adhesion secures the friction necessary between the belt and pulley to prevent slipping. It'has also the advantage of not accumulating gum or other' foreign substance to interfere with its eiiciency.' It .is well known that the friction and motion of running belts generate electricity, and this occurs equally, or to a greater extent, with our iron belt, and the electric condition of the belt greatly increases itsadhesion to the pulley and thereby increases its efficiency. Where leather belts are employed in situations which expose them tp a highptemperature they are soon destroyed bythe heat, while India rubber arerendered entirely useless by softening; exposure to wet and moisture also soon destroys the eiiciency of Y leather und textile belts; while in these situations, the iron beltV has perfect immunity, working equally well in heat, cold, or wet, Qur iron belting also Ais comparatively unaffected" by the influence of acids and other chemicals which soon render worthless belting constructed of the ordinary materials. Its cost is vmuch less than any other material for belts, and its durability exceeds all other substances which have been applied to the purpose, while it is lighter and requires a less expenditure of driving power in performing its work.

`Belts are often used in situations which expose them to the action of chemical liquids and vapors that are destructive to leather, India rubber, and textile materials, and in these cases our imprcved belts prove' 'ar' more durable and eiective. The modification, .shown most clearly in g. '2, is designed for those situations and purposes to which a cable is better adapted than a flat belt, and where it is 'not subjected to'ahigh tempera-4 ture and is dcssigncd to increase the adhesion between the band H and pulleyv D, which from the small surface of the two which come in contact, in consequence of the cable form, would be too slight for many purposes. The face of the pulley has turned in it a V-shaped groove which'is filled4 with hardened India rubber z', gutta. percha,

leather, or any suitable(V compound possessing a slight degree of 'elasticity to enable the cable to partially 'bed itself therein. It should preferably sink half its diameter so that the converging sides ef the groove or seat will compress somewhat the intervening substance z'.

What we claim as our invention, and desire to secure by Letters Patent, is-

The combination of the Wire cable H, with the grooved pulley D, and intervening packing constructed und operating substantially as described.

In Witness whereof We have hereunto signed our names in the presence of two subscribing witnesses.

' BORT. HEN'EGE,

GEORGE MILSOM,

Witnesses; HENRY SPENDELOW.

JAY Hmmm, ALBERT Elsene.

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