US309579A - Machine for bending shafts - Google Patents

Description

(No Model.) 2 sheets sheet 11.

A. G. SNYDER.

MACHINE FOR BENDING SHAFTS.

No. 309,579. Patented Dec-{'23, 1884.

N g Y.

1 (No Model.) 2 SheetsSheet 2.

A. G. SNYDER. I

MACHINE FOR BENDING SHAFTS.

Patented Dec. 23,1884.

llaiiTnn BTaTns PATENT firrrcn.

ANDREWV G. SNYDER, OF PIQUA, OH IO.

MACHINE FOR BENDING SHAFTS.

SPECIFICATION forming part'of Letters Patent No. 309,579, dated December 23,1884. Application filed July 5, 1884. (No model.)

To ttZZ whom it may concern.-

Be it known that I, ANDREW G. Suriname. citizen of the United States, residing at Piqua, in the county of Miami and State of Ohio, have invented certain new and useful Improvements in Machines for Bending Shafts, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

The object of my invention is the applioa iion to this class of machines of automatic power-bending mechanism, whereby the operation of bending can be accomplished more certainly and speedily, and without the employment of manual labor, as heretofore.

The novelty consists in the construction, arrangement, and combinations of the parts, as will be hereinafter set forth and specifically claimed.

In the accompanying drawings, Figure 1, Sheet 1, is a side elevation of a shaft-bending machine embodying my invention. Fig. 2, Sheet 1, is a plan view of one end of the table, showing the relative positions of the parts j ust before the bending is commenced. Fig. 3, Sheet 2, is a plan view of the entire table just after the bending has been completed.

The same letters of reference are used to indicate corresponding parts in all the figures.

The construction of the table and formers, with the exceptions hereinafter pointed out, may be substantially the same as that shown and described in my Reissued Patent No. 9,773, of June 21, 1881, and I will only describe them here by saying that A is the bed of the table, B the removable plate attached thereto, 0 the stationary center former, and D the endwise movable former, which is operated by the hand-screw E.

F is a strap surrounding the former D, and having attached to its ends the angular hinged abutments G, against which the ends of the pair of shafts H are placed, .as seen in Fig. 2. The hinged abutmcnts G, whose pivots are at a, are secured to the swinging outside or wing formers, I, as shown.

J is any power or line shaft carrying pulleys K L, from which belts M N pass-to pulleys O P upon a countershaft, Q, suitably journaled beneath the table. The shaft Q also carries two small pinions, R S, which mesh.

respectively, with two larger pinions, T U, upon a shaft, V. Upon the outer ends of this shaft V are beveled pinions W, which mesh with beveled pinions Y upon two vertical shaft-s, A, which, passing up through suitable bearings in the table, have keyed or otherwise rigidly secured to their upper ends horizontal arms B, to the upper outer ends of which are journaled rollers G on line with and adapted to operate the swinging formers I.

D E are two foot-pedals pivoted at b, and whose bent lower ends carry small idler-pulleys F G in close proximity to the belts M and N, respectively. These belts M and N are normally slack and hang loose upon the pulleys K L, so that the pulleys O) P are not revolved by them. Now, supposing a pair of shafts be placed upon the table, as seen in Fig. 2, and bent to the former O by the clamps H, operated by the right and left screws 1, and held down by the cross-bar J as shown in Fig. 3, the operation of bending the tips by the power mechanism is as follows: The operator presses down the treadle D, which, taking up the slack of the belt M, causes the revolution of the pulley O and shaft Q, and, through the medium of the pinions R, T, V, and Y, and shafts A, causes the arms B to turn toward the formers I until the rollers G, coming in contact therewith, force them inward,and thereby bend the shafts to the position shown in Fig. 3, at which time the treadle D is released and the movement of the parts stopped. To bring back the arms B to theirstartingpoint, the operator presses down the treadle E, which, acting upon the belt N, re verses the former motion of the shaft Q and its connections, thereby causing the arms B to be again swung out to the position shown in Fig. 2. Of course it is understood that a large number of formers, all fitting to the table, may be employed, and that after the bending operation has been completed the usual clamps are applied to lock the parts together, so that the whole may be removed from the table to be dried or seasoned, and that after one set has been bent to the formers it is removed and a set which has been dried or seasoned is replaced upon the table, the finished shafts removed,and new ones placed in position to be bent, thus on abling the operation of bending to be continuous, if desired.

The next feature of my present invention consists in the power mechanism for giving the bend to the butts of the shafts, which can be done before or after, or simultaneously with the bending of the tips. As before stated, the shafts are clamped to the center former, O, are locked down by the cross-bar J and by wedges c, as in my patent before referred to. The ends of the butts rest in the abutments (I, attached to straps c, whose rear ends are suitably hooked, as-atf, to the plate B.

Beneath the straps c are coincident straps g, secured at their rear ends to the table in any suitable manner, and at their forward ends to angular abutments 71, attached to or forming part of a segment-frame, K, the essentials of which are that it should have the two segment-formers 5, Figs. 1 and 3, and an operating-arm, 7',which,'when the machine is at rest, or before the bending operation is commenced, occupies the position shown in Fig. 1. Suitably journaled beneath this end of the table is a shaft, L, carrying at its ends, so as to clear the sides of the table, two arms, 7;, which, when the machine is not in operation, may rest upon a horse, M. 1

Connecting the outer ends of the arms k is a pivoted cross-piece, l, carrying at or about its middle two friction-rollers, m, which loosely embrace the arm 7', as shown in Fig. 1. Also keyed upon the shaft L is a worm-wheel, N, with which engages a worm, 0, upon a horizontal shaft, 1?, carrying two loose pulleys, Q It, with clutch mechanismsS T, of any suitble construction, to enable either pulley to be locked to the shaft at will. In this instance it is done by the sliding feathered hub U upon the shaft 1 which is operated by any suitable lever or han.dle,V. Belts n 0 connect the pulleys It Q, respectively, to the pulleys p upon a power or line shaft, 1'. As will be ob served, the belt 0 is crossed, so that the pulleys R Q may have reversed revolutions. Now, from this construction it will be seen that when a pair of shafts are clamped upon the table, as before described, and are ready to be bent at their butts, the operator, by means of the lever V, locks the pulley R to the shaft 1?, whereupon the arms 7; are raised, and,act-

ing upon the arm j, turn up the segment-benders i until the parts assume the position shown by the light dotted lines in Fig. 1, at which point the bending of the shafts commences. The segment-benders continue to roll over until the position of parts shown by the heavy dotted lines is reached, at which time the shafts will be bent up, as indicated, and are locked up by. means of-links or other suitable means, 8. (Indicated by dotted lines in Fig. 1.) By now unlocking the pulley It, and by locking the pulley Q to the shaft 1?, the motion of the arms is is reversed and the, segmentbender brought back to its normal position. In this manner shafts can be speedily and effeetively bent without the exertion of manual. labor, and without danger of buckling or warping them.

Having thus fully described my invention,

I claim 1. The combination, in a shaft-bending machine, of a suitable supporting frame or table,' a central former carried thereby, and curved as described, arms located one at each side of said former, and each mounted on a shaft suitably journaled, a wheel mounted on said shaft, and driving devicesgearing with said wheel to rotate the said shaft and automatically swing said arms in the direction of the former, substantially as set forth.

' 2. The combination, in a shaft-bending machine, of a suitable supporting frame or table, devices for securing the shafts thereon, segmental benders located at one end of said table adjacent to the butts of said shafts, and adapted to engage the extremities of said butt portions, arms attached to said segmental benders, a shaft suitably journaled, an arm connected thereto and to the bender-arm, and devices 9c driving said shaft to move the first-mentioned arm, substantially as and for the purpose set forth.

3. The combination, in a shaft-bending machine, of a suitable supporting frame or table,

shafts, wing-formers pivotally secured to said too abutments, arms located one at each outer side of said wing-formers, and each mounted. 011 a shaft suitably jonrnaled, a wheel mounted on said shaft, and driving devices gearing with said wheel to revolve the shaft and swing the arms in the direction of the wing-formers, substantially as set forth.

4-. The combination, in a shaft-bending machine, of a suitable frame or table, a central former carried thereby, and curved as de- IIO scribed, arms B, pivoted at each side of said former, rollers O, journaled 011 said arms, wingformers pivotally secured between said central former and said arms, and devices for auto matically moving said arms to cause said rollers to contact with said wing-formers, sub stantially as set forth.

5. The combination, in a shaft-bending ma chine, of a suitable frame or table, a central former carried thereby, and curved as described, an arm located one on each side of said former and mounted on a shaft suitably journaled, a wheel carried by said shaft, driving devices gearing with said wheel to rotate the same and its shaft, for the purpose speoi- I2 5 iied, and appliances for reversing the rotation of said wheel and shaft, substantially as set forth.

6. The combination, in a shaft-bending ma chine, of asuitable supporting frame or table, I 0

devices for seeurin g the shafts thereon, segmental bend ers located at one end of said table adjacent to the butts of said shafts, and straps tached to said table, and carrying the abutbent to receive the extremities of said butt ments d, adapted to receive the butt portions portions, arms attached to said segmental of the shafts, straps located beneaththe said 1 benders, a shaft suitably journaled, an arm straps e, segmental benders connected to tho connected thereto and to the bender-arm, do I said straps g, and means for moving said vices for driving said shaft to move the seg- 1 benders to cause them to bear upon and verment-al benders, and appliances for reversing tieally bend said shafts, substantially as set the movement of said segmental benders, subforth. a

stantially as set forth. ANDREW G. SNYDER. 1o 7. The combination, in a shaft-bending mai Witnesses:

chine, of a supporting frame or table, means WM. J. T. WVILsoN,

OTTO RICHTER.

for securing the shafts thereon, straps e, at

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