US888847A - Rail-bending device. - Google Patents

Description

"No. 888,847. PATENTED MAY 26, 1908.

v. PILIA.

I RAIL BENDING DEVICE. APPLICATION F-ILED MAR.12,'1908.

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UNITED STATES PATENT OFFICE.

RAIL-BENDING DEVICE.

Specification of Letters Patent.

Application filed March 12, 1908.

Patented May 26, 1908 Serial N0. 420,627-

To all whom it may concern:

Be it known that I, ViTo PIL1A,a citizen of the United States of America, residing at California, in the county of Washington and State of Pennsylvania, have invented certain new and useful Improvements in Rail-Bend ing Devices, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a rail bending device, and the primary object of my inven* tion is to provide a simple and effective means for easily and quickly bending a rail or similar structure.

Another object of this invention is to provide a bending device that can be easily clamped to a rail and actuated to bend said rail.

To this end, I have devised a novel bending device that can be manually actuated with considerable ease and one operator, the device being constructed to exert a steady and progressive pressure upon a rail to bend the same to any desired curvature.

My invention comprehends certain novel structural elements which are combined to produce a strong and durable device that can be manufactured at a comparatively small cost and will be free from injury by ordinary use.

The invention will be presently described in detail, and reference will now be had to the drawings forming part of this specification, wherein,

Figure 1 is a side elevation of my device as clamped upon a rail. Fig. 2 is a plan of the same. Fig. 3 is a cross sectional View of the device taken on the line 50-00 of Fig. 2. Fig. 4 is a central longitudinal section of the device. Fig. 5 is a vertical sectional view of a ratchet lever, artly broken away and partly in section, ancFFig. 6 is a vertical transverse section of the same.

In the accompanying drawin s, 1 designates a yoke having hook shaped ends 2, for clamping the head 3 of a rail. The yoke 1 is formed with a central boss 4 having a ball In the boss 4 is revolubly mounted an interiorly threaded sleeve 6 having an annular enlargement 7 adapted to fit in the race 5 and retain a plurality of anti-friction balls 8 therein. The enlargement 7 is formed with a s ur wheel 9, and said sleeve 6 is retained in t e boss 4 by a washer 10 and a nut 11, the former fitting upon the sleeve, While the latter is screwed thereon and fixed by a set screw 12.

Adjustably mounted in the sleeve 6 is a screw 13 said screw having a swiveled head at one end thereof for engaging the head 3 of the rail. The swiveled head comprises a block 14 having a groove 15 formed therein to receive the head 3 of the rail. This block is revolubly retained u on the screw 13 by a pin 16 extending into tie annular groove 17 of the screw 13. The screw 13 adjacent to the block 14 is rovided with a collar 18 having notches 19 ormed therein, these notches being ada ted to aline with a notch 20 formed in the b ock 14, whereby a pivoted latch 21, carried by said block can be swung into the notches, to lock said block with respect to the collar 18.

U on the opposite end of the screw 13 is I fixe a sleeve 22 having a rectangular shank 23, whereby a suitable instrument can be placed upon the end of the screw for rotating the same.

Mounted upon the boss 4 by screws 24 is a plate 25 having bearings 26 for a shaft 27, said shaft having rectangular ends 28. Upon the shaft 27 between the bearings 26 are mounted cups 29 having suitable ball races for anti-friction balls 30 which engage the confronting faces of the bearings 26.

Fixed upon the shaft 27 intermediate the cups 29 is a worm 31 adapted to mesh with the spur wheel 9 previously mentioned.

Secured to the plate 25 by a screw 32 is a casing or housing 33 for the spur wheel 9, said casing or housing surrounding the screw 13, and having its upper edge cut away, as at 34 to provide clearance for the worm 31. Secured to the plate 25 by a screw 35 is a shield 36 for the worm 31, said shield being secured to the housing or casing 33 by screws 37.

In connection with my bending device, I use a ratchet lever, comprising a head 38 having a handle 39. The head 38 is cut away upon one side, as at 40 for a detachable side late 41. Journaled in said side plate and dim head 38 is a ratchet wheel 42 having a rectangular bore 43, which permits of said ratchet lever being placed upon the ends of the shaft 27 or the end of the screw 13. Pivotally mounted in the head 38 is a pawl 44 normally held in engagement with the ratchet wheel 42 by a spring 45 secured to said head. After the yoke has been placed in engagement with a rail to be bent, the

screw 13 is rotated to lace the swiveled head against the rail, the b ock of said head being free to rotate upon the screw. The ratchet lever is then laced u on the end of the screw 13 and is used until tfie screw 13 firmly holds the swivel head in engagement with the rail. The ratchet lever is then removed and is placed u on either end 28 of the shaft 27. The ratc iet lever is then oscillated to rotate the worm 31 and impart a rotary movement to the spur wheel 9. Prior, however, to rotating the worm 31, the latch 21 is placed in engagement with the notched collar 18, to hold the screw 13 fixed with relation to the swiveled head, whereby when the spur wheel 9 is rotated, the screw 13 will be fed through the interiorly threaded sleeve 6.

It will be observed that I have devised a novel device, wherein I have provided mech anism for moving the swiveled head in two different ways against the structure to be bent, the first way including the screw, and the second way including said screw together with the spur wheel and worm.

With the aid of the ratchet lever or suitable instrument, either the shaft 27 or the screw 13 can be conveniently actuated by 1 one operator, and it is in this connection that I save considerable labor, over rail bending devices heretofore used.

The friction in connection with my device is considerably relieved by the ball bearings thereof, and the novel and compact manner in which the elements of my device are ar ranged permits of the parts thereof being readily disassembled and renewed as occasion may demand.

The invention as above described is susceptible to such changes as are permissible by the appended claims.

Having now described my invention what I claim as new, is

1. The combination with a rail, of a yoke adapted to clamp said rail, an interiorly threaded sleeve revolubly mounted in said yoke, a spur wheel carried by said sleeve, a screw adjustably mounted in said sleeve, a swiveled head carried by the end of said screw and adapted to engage said rail, bearings supported from said yoke, a shaft revolubly mounted in said bearings, a worm mounted upon said shaft and adapted to mesh with said spur wheel, a housing supported from said yoke for rotecting said spur wheel, a shield for guar ing said worm, a ratchet lever for rotating said screw and said shaft, and means carried by said swiveled head for fixing said head with relation to said screw whereby said screw will feed through said sleeve by virtue of said worm.

2. The combination with a rail, of a yoke adapted to be clamped thereon, a revoluble sleeve mounted in said yoke, a spur wheel carried by said sleeve, a screw adjustably mounted in said sleeve, a swiveled head carried by said screw for engaging said rail, a worm revolubly mounted above said spur wheel and adapted to mesh therewith, a ratchet lever for imparting a rotary movement to said worm and screw, and means carried by said swiveled head for fixing said head with relation to said screw whereby said screw will feed through said sleeve by virtue of said spur wheel.

3. A bending device comprising a yoke, a sleeve revolubly mounted in said yoke, a spur wheel carried by said sleeve, a screw adjustably mounted in said sleeve, a swivel head carried by said screw, a worm revolubly mounted above said spur wheel and adapted to mesh therewith, means for imparting a rotary movement to said worm and said screw, and means carried by said swiveled head for causing said screw to feed through said sleeve by virtue of said worm.

4;. A bending device comprising a yoke, a revoluble sleeve carried thereby, a spur wheel carried by said sleeve, a screw extending through the sleeve, a swiveled head carried by said screw, means arranged above said sleeve for engagement with said spur wheel to impart a rotary movement thereto, and means'carried by said swiveled head for causing said screw to feed through said sleeve.

In testimony whereof I affix my signature in the presence of two witnesses.

VITO PILIA.

Witnesses:

MAX H. SROLOVITZ, K. H. BUTLER.

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