US1168376A

US1168376A - Stave-bending machine.

Info

Publication number: US1168376A
Application number: US3169515A
Authority: US
Inventors: Edwin F Beugler
Original assignee: E & B Holmes Machinery Co
Current assignee: E & B Holmes Machinery Co
Priority date: 1915-06-02
Filing date: 1915-06-02
Publication date: 1916-01-18
Anticipated expiration: 1933-01-18

Description

E. F. BEUGLER.

. STAVE BENDING MACHINE.

APPLICATION FILED JUNE 2.1915.

1,168,376. Patented Jan. 18, 1916.-

3 SHEETS-SHEET l.

INVENTEIR mi m hYuzu/trggw ATTURNEY:

THE COLUMBIA PLANOGRAPH cc.. WASHINGTON, D. c.

E. F. BEUGLER.

STAVE BENDING MACHINE.

APPLICATION FILED JUNE 2,1915.

1 168 3,76, Patented Jan. 18, 1916.

&. 3 sums-sum 2 i w N N I 'i Q) N INVENTEIR' ATTURNEYEL THE COLUMBIA PLANDGRAF" c0, WASHINGTON, D. c.

Patented Jan. 18, 1916.

3 SHEETS-SHEET 3- INVENTUF:

ATTEIRNEYE THE COLUMBIA PLANUGRAPH 60., WASHINGTON, [)4 c4 UNITED; STATES PATENT @FFTQE.

EDWIN F. BEUGLER, OF BUFFALO, NEW YORK, ASSIGNOR TO E. & 'B. HOLMES;

MACHINERY COMPANY, OF fBUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

STAVE-BENDING MACHINE.

Application filed June 2, 1915.

This invention relates to a machine for bending staves and more particularly staves which are adapted for repair Work and which do not require a large outfit for making repairs.

It is the object of this invention to produce a simple and eflicient machine of this character which can be made at comparatively low cost and one in which the several parts are readily adjustable to different lengths and sizes of staves.

In the accompanying drawings: Figure 1 isa side elevation of a stave bending machine constructed in accordance with my invention. Fig. 2 is a top'plan view thereof. Fig. 3 is a longitudinal horizontal section taken on line 33 of Fig. 1. Fig. 41s a fragmentary longitudinal vertical section taken on line 4-4, Fig. 2, showing the bed of the machine in the uppermost position when bending a stave. Fig. 5 is a vertical transverse section taken on line 55 of Fig.

v1. Fig. 6 is a vertical transverse section taken on line 66 of Fig. 1, through the bed of the machine. Fig. 7 is a vertical transverse section taken on line 77, Fig. 1.

Similar characters of reference indicate .corresponding parts throughout the several views.

1 indicates a substantially horizontal flexible table which is adapted to support a barrel stave 2 during the operation ofbending the same to the desired curvature to conform to the shape of the barrel for which the same is designed. This flexible table is preferably supported on a bed plate made up of two

sections

3 and 4. The inner section 3 of this bed plate is preferably provided with downwardlyprojecting wall portions or'flanges 5 and 6 supported on a suitable base 7. The outer section 4 of the bed plate is vertically movable'and provid ed at its rear end with suitable ears 8 which are horizontally pivoted on trunnions 9 carried by forwardly-projecting ears 10 which are formed integral with the stationary bed plate section 3.

. The flexible table comprises a plurality of Specification of Letters Patent.

Patented Jan. 18, 1916.

Serial No. 31,695.

strips 56 of metal extending the full length l transverse blocks 57 are arranged in a row lengthwise of the metal plates and on the upper side of the same. Each block is provided at its outer edges with downwardly projecting hook-shaped flanges 58 which receive the edges of the metal strips 56. The upper face of each block is of concave form transversely the curvature corresponding to the transverse curvature of the staves.

59 indicates a supporting block arranged in recesses 60, 61 located in the opposing ends of the two bed plate sections. This supporting block is arranged beneath the central portion of the table and is supported at its ends by vertically adjustable set screws 62, 63. The set screw 62 is arranged on the inner end of the stationary bed plate section and projects into a socket 64 in that end of the supporting block, while the set screw 63 is mounted on the inner end of the movable bed plate section and is provided at its upper end within the recess 61 on the inner end of said bed plate section with a swivel head 65 which slidingly supports the other end of the supporting block. This permits the set screw 63 to move with the movable portion of the bed plate without interfering with the proper support of the supporting block. The rear end of the flexible table engages a rear abutment 66 which in turn is held in place by an abutment arm 67, the lower end of which is horizontally pivoted as at 68 to the rear side or wall portion of the base of the machine.

69 indicates a headed bolt arranged transversely between the vertical walls of the stationary base 3 and passing through a slot in the upper end of the abutment arm 67' while the threaded end has a cap 71 held thereon by a nut 72. Interposed between the cap 71 and the fixed bed plate section are two spiral springs 73, 74, one arranged within the other. These springs serve to hold the abutment block 66 yieldingly in its forward position through the medium of the arm 67 and rod 69.

67 indicates a filling piece interposed between the abutment blook and the abutment arm 67 and serving to adjust the abutment understood that the flexible table may be nected together on the underside thereof by a suitable yoke 7 7. This yoke is provided with a central portion 7 8 extending laterally therefrom approximately parallel with the 7 underside of thebase and adjustably secured to the underside of the base by an adjusting bolt 80 passing through a longitudinal slot 7 9 in the yoke. The front abutment is horizontally pivoted to the yoke 77 and is adapted to be pressed against the front end of the table by a suitable hand wheel 81 having a screw threaded stem 82 working in an internally screw threaded lug 83 on the movable bed plate section 4.

The means forimparting a vertical movement to the outer section 4 of the bed plate are preferably constructed as follows: 11 indicates a worm shaft arranged horizontally and lengthwise in the lower portion of the machine directly beneath the bed plate sections and parallel therewith. The forward end of this shaft is supported in a suitable bearing 12 projecting upwardly from the base 7, while its rear part extends beyond the rear side of the base and is journaled in a suitable bearing 13 thereon. 14 indicates an internally threaded sleeve slidably mounted on the worm shaft 11. This sleeve is provided on either side with laterally projecting lugs or abutinents 15 which 1 are adapted to engage with the lower end of a shifting arm 16, which has its lower end forked and straddling the sleeve and bearing with its prongs or check portions 17 against the abutments 15. A thrust bearing 13'" is interposed between a shoulder 13 of the worm shaft and the inner end of the bearing 13, to relieve the strain when the worm sleeve is moving in its forward working stroke. The upper end of this shifting arm is bifurcated and secured to the underside of the vertically movable base section 4. l Vhen the worm shaft is rotated in one direction the sleeve 14 and lower end of the shifting arm are carried forwardly, thereby causing the vertically movable portion 4 of the bed plate to swing upwardly on its pivot. but when the worm shaft is rotated in a reversed direction the sleeve 14 is caused to travel rearwardly to its initial starting place allowing the movable section of the bed plate to return to its normal horizontal p.0- sition by gravity.

The means for imparting an alternate rotary motion to the worm shaft are preferably constructed as follows: 19 indicates, the main drive pulley securedto the worm shaft 11 by suitable set screws 20. Arranged on either side of the main drive pulley are two

loose pulleys

22, 23, held thereon by a suitable nut 24. Driving belts turning in opposite directions, are received on said loose pulleys and are adapted to be alternately shifted to the main driving pulley 19 by any suitable means, those shown in the drawings being constructed as follows: 25, 26 indiing rod 33 provided on its outer ends with suitable nuts 34. Extending laterally from the central portion 29 of the outer yoke is an ear 35 surrounding the supporting rod 25. This ear carries a circular rod 36 having adjustably secured thereto a belt shifter 33' which actuates the belt running on the loose pulley 23. The central portion of the inner yoke'is also provided with an ear 33 which extends laterally therefrom and is adapted to surround the supporting rod 26. It likewise carries a circular rod 39 which carries a belt shifter 40 adapted to control a belt running on the loose pulley 22. Arranged upon the rod 25 between the ear 32 and the rear end of the inner yoke 28 is a compression spring 41 while a similar compression spring 42 is carried on the supporting rod 26 between the ear 38 and the outer end of the outer yoke 27. These springs act to force the said yokes to their respective ends of the supporting rods. lVhen shifting either belt from its companion idle pulley to the central driving pulley the shifting rod 33 is shifted in the proper direction and carries with it one of the yokes, thereby causing the belt shifter to move toward the central drive pulley carrying with it one of the drive belts. The shifting rod 33 is actuated by a shifting lever 43 fulcrumed at 44 to the base of the machine, and is connected by a link 45 to a sleeve 46 on the rod 33. Foot pedals 43 43 extending laterally in opposite directions from the shifting lever serve as additional means for actuating the shifting mechanism. 7

Means are provided for automatically shifting. the belts to their inoperative position said means determining the travel of the worm sleeve 14 in either direction, thereby limiting the vertical movement of the flexible table, making it possible to bend all of the staves to the desired curvature. The 7 means are preferably constructed as follows: 47 indicates a shifting rod arranged horizontally below the worm shaft 11 while its other end is fulcrumed to the shifting lever 43. Adjustable tappets or collars i8, 49 are secured at opposite ends of the shifting rod by set screws 50. Extending downwardly from the worm sleeve 14 is an arm 51 the lower end of which is slotted or forked and adapted to straddle the shifting rod 47 between the adjustable tappets or collars. \Vhen the arm 51 engages with the collars when traveling in either direction the shifting rod is moved in the proper direction to shift the belt shifting mechanism in the proper direction to free the drive pulley, thereby stopping the machine. 52 indicates a brake drum or wheel secured to the forward end of the worm shaft. A vertically movable brake arm 53 is pivoted at 54 to the lower portion of the bearing 12. 55 indicates a vertically adjustable brake shoe secured to the outer end of the brake arm which is adapted to engage the periphery of the brake wheel. The inner end of the brake arm 53 is so constructed as to be depressed by a roller carried by the shifting lever The arrangement of this roller is such that it depresses the inner end of the brake arm when the shifting lever is in its vertical inoperativeposition. This serves to press the shoe against the brake wheel, thereby immediately stopping the rotation of the worm shaft 11.

The operation of the machine is as follows: Assuming the parts to be in their normal position as shown in Fig. l, a stave 2 is placed on the flexible table between the

abutments

66, 75, the outer one of which is forced against the stave by the screws 82 of the hand wheel 81, thereby firmly holding the stave in place. The controlling lever a3 is then shifted in the proper direction to cause the worm shaft to move the worm sleeve 14 forwardly or in the direction to force the shifting arm 16 forwardly. This action causes the outer end of the vertically movable bed plate section A to move upwardly upon its horizontal axis from a horizontal position to an inclined position shown in Fig. 4. It will be noted that the central part of the outer or underside of the stave is always in line with the center of the axis 9 of the movable bed plate section, whereby a compressing effect is imparted to the upper or inner side of the stave lengthwise thereof as its front or outer end is bent upwardly and thereby prevents breaking of the same. Crushing of the stave or breakage of the machine is prevented by the resilient abutment arm (57 governed by the springs 73, 7A which give enough to permit of a slight longitudinal movement of the table and stave when necessary. After the stave has been bent to the proper curvature, as shown in Fig. l, a retaining bar 84: having its ends provided with downwardly bent claws 85 is placed over the stave with its claws in engagement with the ends thereof, this being possible by providing the abutments 66, with notches 86 which receive the claws. The hand wheel 81 is now turned to release the abutment 7 5 after which the shifting lever 43 is reversed and the sleeve 1A moved rearwardly allowing the movable section of the bed plate to again attain the horizontal position shown 111 Fig. 1, preparatory to bending the next stave. The stave is held between the ends of the retaining bar 852 while being removed from the machine and it remains connected therewith until the stave has dried or become set ready for use when the retaining bar is removed.

This machine is simple and durable in construction and permits of quickly and properly bending staves for diflerent sized barrels with the expenditure of but little power and the employment of comparatively unskilled labor.

I claim as my invention:

1. A stave bending machine comprising a flexible table, a sectional bed plate supporting said table, means carried at the outer ends of the bed plate for securing a stave to said flexible table, and means for raising one section of the bed plate.

2. A stave bending machine comprising a flexible table, a sectional bed plate supporting said table, one section of which is vertically movable, means carried by the bed plate for securing a stave to said table, and means for imparting a vertical movement to the movable section of the bed plate.

3. A stave bending machine comprising a flexible table a sectional bed plate supporting said table, one section of which is movable and the other stationary, means carried by the bed plate for securing a stave to said flexible table, a vertically adjustable supporting block interposed between the inner ends of the bed plate sections for supporting the central portion of said flexible table, means for adjusting said supporting block relatively to said bed plate sections and means for imparting a vertical movement to the movable section of the bed plate.

i. A stave bending machine comprising a flexible table, a sectional bedplate support ing said table, one section of which is piv= oted to move vertically, means carried at the outer ends of said bed olate for clamping a stave to said flexible table, and a horizontal shaft journaled in fixed bearings, a tappet movable lengthwise of said shaft, and an arm engaged by said tappet and connected with the movable section of the bed plate.

5. A stave bending machine comprising a flexible table, a sectional bed plate support: ing said table, one section of which is piv= oted to turn vertically, means carried at the outer ends of said bed plate for clamping a s a e to said. flexible table, and means for stave to said flexible table, a worm shaft arranged horizontally beneath said bed plate, a horizontally movable member car ried by said Worm shaft in engagement with said shifting arm, means for rotating said Worm shaft, and means controlled by the horizontally movable member for automatically stopping the rotation ofsaidworm shaft. v 1

7. A stave bending machine comprising a flexible table, a sectional bed platesupporting said table, one section of which is vertically movable and provided with a de-- pending shifting arm, means carried at the outer ends of said bed plate for clamping a stave to said flexible table, a worm shaft arranged horizontally beneath said bed plate, a horizontally movable member carried by said worm shaft and engaging with said shifting arm, means for rotating said worm shaft, a controlling lever for said rotating means, and means controlled by the horizontally movable member-for actuating said controlling lever for automatically stopping the rotation of said worm shaft.

8. A stave bending machine comprising a flexible table, a sectional bed plate support ing said table, oneseotion of which is vertically movable and provided with a depending shifting arm, means carried at the outer ends of said bed plate for clamping a stave to said fiexible'table, a worm shaft arranged horizontally beneath said bed plate, a horizontally movable member carried by said Worm shaft and engaging with said Copies of this patent may be obtained for five cents each, by. addressing" the Commissioner of Patents,

shifting arm, tight and loose pulleys arranged on the Worm shaft, belt shifting means for shifting-driving belts relatively to said pulleys, -a controlling lever for said belt shifting means, a brake drum arranged on said worm shaft, a brake shoe'adapted to engage said brake drum and actuated by said controlling lever, and means controlled by the horizontally movable member for actuating said controlling lever.

9. .A stave bending machine comprising a stationary rear'bed plate section, a vertically movable bed plate section pivoted to swing vertically at its rear end onthe front end of said rear section, a supporting block arranged between the opposing ends of said bed plate sections, and adjusting screws arranged on the opposing ends of said bed plate sections and supporting the ends of said block.

10. A stave bending machine comprising a stationary rear bed plate section, a vertically movable bed plate section pivoted to swing vertically at its rear end on the front end of said rear :section, a rear abutment resiliently mounted on'the rear bed plate section, an adjustable abutment movably' mounted on the front bed plate section, a yoke on which said front abutment is pivotally mounted, and a clamping screw arranged on said front bed plate section and passing through a longitudinal slot in said yoke.

11. A stave bending machine comprising a stationary rear bed plate section, a ver tically movable bed plate section pivoted to swing vertically at its rear end on the front end of said rear section, a front abutment adjustably mounted on the front bed plate section, a rear abutment movable lengthwise on the rear bed plate section, an abutment arm operatively engaging its upper end with the outer side of said rear abutment while its lower end is pivotally mounted on a fixed support, a tension rod connected atone end with said arm, and a spring interposed be tween said rod and said support.

EDWIN F. BEUGLER.

Was i g n, D- 0-