US888429A - Machine for trimming and beading wheelbarrow-trays. - Google Patents

Description

' N8. 888,429. PATBNTBD MAY 19, 1908.

. J. M. SKINNBR. MACHINE POR TRIMMING-AND READING WHEELBARROW TRAYS.

APPLICATION FILED DEO.23,1907.

4 SHEETS-SHEET 1.

WTNESSES: INVENTOR. C. M?? M'M/U, #7M 8 M@ WWW No. 888,429. y PATENTED MAY 19, 1908.

J. M. SKINNER. MACHINE POR TRIMMING AND BEADING WHEELBARROW TRAYS.

APPLICATION FILED DEO.23.1907.

4 SHEETS-SHEET 2.

1m: NuRnls FsERs ce., wAsmNcfoN. n. c,

No. 888,429. PATENTED MAY 19, 1908. J. M. SKINNER. MACHINE FOR TRIMMING AND READING WHEELBARROW TRAYS.

APPLICATION FILED DEO.23.1907.

4 SHEETS-SHEET 3.

WITNESSES: mvENToB gj@ Maz; 4% fama@ @@MTM 1n: Nokms PETERS cc., wAsmNaron, n. c

No. 888,429. PATENTED MAY 19, 1908. J. M. SKINNER.

MACHINE FOR TRIMMING ANDBEADING WHEELBARROW TRAYS.

APPLICATION FILED DEO.23.1907.

4 SHEETS-SHEET 4,

WITNESSES: y INVENTOR.

ms NoRRls rsrERs co., wAsHmcmN, n. c.

UNITED STATS PATENT OFFICE.

JOHN M. SKINNER, OF TOLEDO, OHIO, ASSIGNOR TO THE TOLEDO HIEELBARROW COMPANY, O F TOLEDO, OHIO, A CORPO RATION OF OHIO.

MACHINE FOR TRIMMING AND BEADING WHEELBARROW-TRAYS.

Application filed December 23, 1907.

To all whom it Imay concern.'

Be it known that l, Jeux M. SKINNnn, a citizen of the United States,and a resident of Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in Machines for 'lrimming and Beading heelbarrow -Trays or the Like; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to machines for progressively trimming and beading'wheelbarrow trays or other similar objects of regular or irregular form other than a circle, and has reference more particularly to improvements in the trimming and beading mechanisms thereof.

The primary object of my invention is the provision in combination with the trimming mechanism of simple and improved means for causing the trimming wheels to be positively actuated or guided to maintain their axes in constant perpendicular relation to their intended irregular path of trimming movements at their point of engagement with the work, when the work and the trimming mechanism have relative revoluble movements, whereby to ell'ect a more perfect and efficient operation of the trimming mechanism than has heretofore been accomplished in machines of this class.

Other objects of my invention will be apparent` by reference to the following detailed description.

The operation, construction and arrangement of the parts of my invention are `fully described in the following specification, and illustrated in the accompanying drawings, in which,-

Figure 1 is a top plan view of the machine with the work-clamping parts removed. Fig. 2 is an enlarged top plan of the trimmingmechanism and an associated portion of the cam-table. Fig. 3 is a side elevation thereof with the cam-table in section on the dotted lines :t in Figs. 1 and 2. Fig. 4 is an enlarged top plan view of one of the beadingheads. Fig. 5 is a side elevation thereof with portions of the cam-table and work-l support in cross-section.v Fig. 6 is a side ele- Speeication of Letters Patent.

Patented May 19, 1908.

Serial No. 407,837.

vation of the machine with its associated work-holder and lluid pressure controlling means. Fig. 7 is a central longitudinal section of a portion of the trimming-head and its associated parts, and Fig. 8 is a central cross-section of one of the beading-rolls.

Referring to the drawings, 1 designates the base or bed plate upon which the operating mechanism is mounted, said base being supported on legs 2 or in any other suitable manner.

Mounted for free rotary movement on the base 1 is the rotary table 3, which has its shaft suitably journaled in a pedestal bearing in the base and its outer portion resting on anti-friction rollers 4, which are journaled in brackets 5 carried by the base, as shown in Fig. 5. The table 3 is circular in form and is provided on its periphery with teeth 6, which mesh with a `worm carried by the drive-shaft 7, whereby rotation may be communicated from the worm to the table. On the upper surface of the table 3 is provided a plurality of endless cam-grooves or ways, which are shown in the drawings as being three in number and designated 8, 8 and 8l. Disposed centrally of the table within the inner one of these grooves or ways is the work-support or pedestal 9, which has its top elevated above the table surface and fashioned to conform to the contour of the work 9 to be placed thereon. In the drawings the work-support is shown as being of rectangular construction with rounded corners to conform to the general shape of a drawn sheet-metal wheelbarrow tray, and the cam-grooves or ways S and S are of like form, as will hereinafter be more fully described.

Carried at the lower end of a plunger 10 above the worksupport or pedestal 9 is a work-holder 1.1, which, when lowered, is intended to cooperate with the work-support to hold the work firmly thereto while being operated on. The plunger 1() is provided at its upp'er end with a piston-head (not shown), which operates in the vertical cylinder 1.2 that is suspended from an overhead beam or other suitable support 13. The admission of operating fluid, whether it be conipressed air or other `fluid, to thel cylinder is controlled by the lever 11i, which connects with a suitable valve.

Secured to and .rising from the base or bedplate 1 at the sides of the table 8 are a plurality of pedestals 15, which have their top portions fashioned to form guide-boxes which stand radially of the table and in which the bottom plates 16 or 45, carrying the trimming or beading-heads, are mounted for radial sliding movements relative to the table.

The trimming-head comprises a base-piece or lower jaw 17, which is mounted on its bottom plate 16 for longitudinal-sliding movement relative thereto, and the upper jaw 18, which is angled upward from the base-piece 17 intermediate its ends and inward thereover. The trimming-head is slidingly held to the plate or member 16 by the coaction with its upper side edges of the removable guide-box plate 19, andit cooperates with said plates 19 to retain the member 16 in the guide-box, as shown. A swivel-head or yoke 20 is mounted for horizontal pivotal movement between the jaws 17 and 18 of the trimming-head and is provided with trunnions 21, which are journaled in bearings in the jaw terminals, as shown in Fig. 7, or it can be journaled to its carrying-head in any other suitable or convenient manner.

The swivel-head or yoke 20 carries the upper and lower shear-wheels 22 and 23 at the end thereof disposed toward the table 3. The wheel 22 is mounted on a spindle 24, which works through a vertically adjustable block 25 mounted in the swivel-head, and the wheel 23 is mounted on the spindle 26, which is iixedly secured to the lower portion of the swivel-head, as shown in Fig. 7, or in any other suitable manner. The block 25 is carried at the lower end of an adjustinglscrew 27, which is threaded through the top portion of the swivel-head or yoke and passes upwardly through a transverse segmental slot 28 in the upper jaw 18 of the trimming-head. The spindle 24 has a vertical adjusting movement in a vertically broadened socket 29 in the swivel-head and bears, at its inner end against the end of an adjusting screw 30, which is threaded in the swivel-head at the base of said socket and adapted to be adjusted to maintain the shear-wheel 22 in shearing engagement with its companion. The vertical centers of the shearing faces of the shear-wheels 22 and 23 stand in direct axial alinement with the centers of the trunnions on which the swivelhead or yoke 20 swings. The trimminghead is adjusted relative to its carrying plate or member 16 by the hand-screw 31, which has its inner end threaded through a horizontally-pivoted head 32 that is carried by the standards 33 rising from the base-plate 17. The outer portion of the screw 31, when lowered, is intended to seat in an incut 34 in the end-pieceor upright 35 of the plate or member 16 and is held against longitudinal movemen-t relative thereto by the annular enlargement 36 and hand-wheel 37 shouldering against opposite faces of said end-piece. It is thus apparent that when the screw-shank is disengaged from the end-piece 35 the trimming-head may be freely moved longitudinally of the base-plate 16, and that when the screw-shank is lowered in engagement with said end-piece the trimming-head and its base-plate 16 may be caused to have relative longitudinal adjustment by turning the screw.

Mounted on a vertical stud pivot at the under side of the inner end portion of the base-plate 16 of the trimming-head is a roller 38, which is intended to operate in the camgroove or way 8 of the table to cause the shear-wheels 22 and 23 to follow the course of such groove as the table 3 and trimminghead relatively revolve, it being understood that the course of the groove conforms to the perimetric contour of the work when trimmed.

Projecting laterally from the lower side portion of the swivel-head or yoke 2() in the direction of shearing-movement of the cutters is the arm 39, which is adjustably secured to the swivel by bolts 40 passing through slots in its wall plate, or in any other suitable manner, and carries the block 41 on its under side. This block is adapted to have longitudinal adjustment on the arm 39 and is held in adjusted position by a bolt 42, which passes through a longitudinal slot 43 in the arm. Mounted on a vertical stud pivot at the under side of the block 41 is a pilot-roller 44, which is intended to travel in one of the other cam grooves 8, 8a and 8b than that in which the roller 38 travels, and is shown in the present instance as traveling in the outer groove 8b. The purpose of the pilot-roller 44 is to control the movement of the swivel-head relative to the trimminghead so that the shear-wheels will be positively guided to follow the intended course oftrimming movement and be maintained in constant parallelism with such course at the point of bite. To accomplish this it is found that the grooves 8 and 8b in which the rollers 38 and 44 travel should parallel each other except at the corners, at which points the groove 8b is vbulged slightly outwardly, at 8. These bulges are so fashioned as to cause the pilot-roller 44, as it enters and passes therethrough, to swing the swivelhead 2O relative to its carrying-head as the differentv centers of the circle of the corner of the work being operated on and the table 3 may require to maintain the axis of the shear-wheels perpendicular to the work edge at the point of shearing contact, as shown in Figs. 1 and 2 by the lines a-a and b-b. Due to the pilot-roller 44 preceding the swivel-head, the major portion of each bulge 8C is disposed on the far side of the groove or race corner with which it is associated.

Each beading-head comprises the bottomplate 45, which is mounted for longitudinal sliding movements in the guide-box of its pedestal 15, and the top-plate 46, which is supported by and movable in the guide-box with and relatively to the bottom-plate. The bottom-plate carries a vertical studpivot on the under side of its inner end portion on which is mounted a roller 47 for traveling in the intermediate cam groove or race S of the table On the upper side of the forward end portieri of the plate 46 is a boss or pedestal 4S, which either carries or forms a pedestal bearing for the spindle on which the beading-roll 49 is mounted.

The roll 49, as shown in S, comprises the body portion 50, which is formed with a lower annular flange 51 intended to underlie the flange of the work, the hardened groove bead-forming-rim 52, which encircles the upper reduced portion of the body 50, and the top-plate or disk 53, which is screwed to the body 50 and coacts with the rim 52, to retain it on the body. This form` of roll forms a very efficient one for bead forming purposes. The groove S'LL is preferably so disposed relative to the work flange, and the beading-roll 49 so dimensioned, that the aXes of the guide-roller 47 and beading-roll 49 are in approximate alinement when the latter is operating to form a bead on the work, as shown in Fig. 5. It is apparent, however, that the beading-rolls employed lare not restricted to this construction.

The longitudinal movement of the topplate 46 relative to the bottom-plate 45 is controlled for nice adjustment by the handscrew 54, which works through a swivelblock 55 carried by the uprights 56 and has its outer end portion adapted, when lowered in horizontal position, to shoulder in an incut 57 in the end-piece or upright 58 at the outer end of the bottom-plate in a similar' manner to the coaction of the screw 31 of the trimming-head with its cooperating parts.

In the practical operation of my machine, the trimming and beading-heads are all withdrawn after each trimming and beading operation to permit a removal of the beaded work and the securing to the work-pedestal 15 of an untrimmed tray or other article. This withdrawal is quickly el'l'ected by raising the adjusting- screws 51 and 54 from engagement with their respective end-pieces 35 and 5S, after iirst giving the screws 54 a few turns to cause them to recede to their initial flange-engaging positions, and then manually 'drawing the trimming and beading mechanisms outwardly on their respective bottomplates out of interfering position with the work, thus facilitating a quick and easy adjustment of said mechanisms to engage o1' release the work. When an untrimmed tray has been positioned on the work-pedestal, the trimming-head is moved inwardly on its bottom-plate until the shear-wheels come in lcontact with. the work Vflange, when it is slowly moved inward to permit the shearwheels to gradually work through the llange until adjusted to cut a suitable marginal strip from the flange, the trinuning-head then being locked against radial movement independent of its bottom-plate by dropping the screw 251 in engagement with the incut in the end-piece 35. The trimming operation being completed, the beading-heads are moved inwardly to permit the screws 54 to lock shape and to maintain the shearing surfaces of the shear-wheels in constant parallelism with the rim at the point of bite thereof, and the beading-rolls 4E) are automatically adjusted to follow the contour of the tray rim due to the guide-roller 47 traveling in the cam-groove or race 81.

l wish it understood that l do not desire to be restricted to the exact details of construction and arrangement of the parts shown and described, as obvious modifications will occur to persons skilled in the art.

-Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is,

1. in a machine of the class described, the combination of a revoluble work-holder, a swivel-head adjustable radially ol"l the workholder, shear-wheels carried by the head for trimming the work, means for automatically adjusting the head radially of the work to cause the length of radial lines intersected by the shear-wheels to vary as the work-holder revolves, means for mechanically adjusting the head relative to the work, and automatic .means positively controlling the swivel movements of the head to maintain the axes of the shear-wheels perpendicular to the intended line of cut at the point of bite of the wheels.

2. .ln combination in a machine of the class described, a work-holder and a swivel-head capable of relative revolving movements, and two cams of di'll'erent shape encircling the work-holder, said swivel-head having parts cooperating with said two cams, one cam serving to adjust the head radially of the work-holder and the other to control the swivel movements of the head.

3. .ln combination in a machine for trimming wheelbarrow-trays or the like, a workholder and a swivel-head. capable of relative revolving movements, shear-wheels carried by the head for trimming the Work, means i arm projecting from the head and adapted for automatically movingI the head radially for differential adjustment relative thereto,

of the Work to cause the Work to be trimmed to a predetermined shape other than a circle as the Work-holder and head relatively revolve, and an endless cam encircling the Work-holder and cooperating with a part of the swivel-head to positively control the swivel movements of the head as the Workholder and head relatively revolve.

4. In combination in a machine for trimming WheelbarroW-trays or the like, a Workholder and a swivel-head capable of relative revolving movements, shear-wheels carried by the head for trimming Work held by said holder, means for automatically moving the head radially of the Work to cause the Work to be marginally trimmed to a predetermined shape other than a circle as the Work-holder and head relatively revolve, means for mechanically eHecting a radial adjustment of the head relative to the Work, and a cam encircling the Work-holder and cooperating with a part of the swivel-head to positively control the swivel movements oi the head as thevvorkholder and headrelatively revolve.

5. In combination in a machine 'for trimming WheelbarroW-trays or the like, a Workholder and a swivel-head capable of relative revolving movements, shear-Wheels carried by the head for trimming' Work held by the holder, means for automatically moving the head radially of the Work to cause the Work to be marginally trimmed to a predetermined shape other than a circle as the Work-holder and head relatively revolve, an arm adjustably projecting from the head, a cam encircling the Work-holder and cooperating With the' arm to positively control the swivel movements oi" the head as the Work-holder and head relatively revolve.

6. In combination in a machine of the class described, a Work-holder and a swivel-head capable of relative revolving movements and the latter being capable of radial adjustment relative to the holder, shear-Wheels carried l by thehead, a plurality of cam-Ways encircling the Work-holder, one of said Ways being fashioned to conform to the perimetric con'- tour of the Work When trimmed and forming a guide for automatically controlling the radial adjustment of the head, and a part carried by the head and cooperating with one or the other of said Ways to positively control the swivel movements of the head to maintain the axis of the shear-Wheels perpendicular to the intended line of cut at the point of bite of the wheels as the holder and head relatively revolve.

7. In combination in a machine lor trimming WheelbarroW-trays or the like, a Workholder and a swivel-head capable oi' relative revolving movements and the latter being capable of radial adjustment relative to the holder, shear-Wheels carried by the head, an

and a cam-Way encircling the Work-holder and 'fixed relativethereto, said Way coperating With the arm to positively control the swivel movements of the head as the. Workholder and head relatively revolve.

8. In a machine for trimming articles of any form other than a circle, the combination With a Work-support, of a trimmingf head adjustable radially to the Work-support, said Work-support and trimmer-head being capable of relative revolving movements, a swivel-head carried by the trimming-head, shear-Wheels carried by the swivel, and independent cam means for automatically moving the head radially of the Work-support to trim the Work in a predetermined shape and for automatically adjusting the swivel-head to positively maintain the shear-Wheels in constant parallelism with the trimmed edge of the Work at the point of bite when the Work-support and trimmer-head relatively revolve.

9. In a machine for trimming Wheelbarrow-trays or the like, the combination With the Work-support, of a trimming-head radially adjustable relative to the Work-support, said support and trimming-head being capable of relative revolving movements, a swivel-head carried by the trimming-head and having an arm projecting laterally in advance thereof, shear-Wheels carried by the swivel-head, a pilot-member carried by the arm, a cam fixedV relative to the Work-support and fashioned to coperate with said pilot-member to automatically control the swivel movement of the swivel-head to constantly maintain the axes of the shear- Wheels perpendicular to the predetermined line or' cut ofthe Work at the point of bite of the Wheels as the Work-support and trimming-head relatively revolve, and means independent of said cam and pilot-member for automatically moving the head radially of the Work to cause the shear-Wheels to follow the intended line of cut.

10. In a machine for trimming Wheelbarrow-trays or the like, the combination With the Work-support and a cooperating Workholder, of a trimming head automatically adjustable radially of' the Work-support, said support and head being capable of relatively revolving, a swivel-yoke carried by the trimming-head for horizontal swinging movements and having a preceding arm projecting therefrom, shear-Wheels carried by said yoke with their point of bite in vertical alinement with the axis of the yoke, a pilot mernber adjustably carried by said arm,. and a cam 'lixedly encircling the Work-support and fashioned to coperate With the pilot-member to automatically adjust the position of the yoke relative to its carrying head to constantly maintain the axes of the shear-Wheels perpendicular to the -predetermined line of cut of the work at the p'oint of bite of the Wheels as the Work-support and trimminghead relatively revolve.

11. 1n a machine for trimming wheelbarrow-trays or the like, the combination with the .work-holder, of a trimming-head, said holder and head beingl capable of relative revolving movements, means for automatically adjustingthe head to the work as the holderand head relatively revolve, a swivelyoke carried by the trimming-head and having a pilot-member projectinglaterally therefrom in advance thereof, shear-wheels carried by the yoke, and cam means cooperating with the pilot-member to automatically adjust the position of the yoke relative to its carrying-head to constantly maintain the aXes of the shear-wheels perpendicular to the redeterinined line of cut at t-he point of bite of the wheels as the work-holder and trimming-head revolve.

12. 1n a machine of the class described, the combination with the work-holder, of a trinmier-head, the work-holder and head beingcapable of relative revolving movements, a swivel-yoke carried by the trimming-heini, shear-wheels carried by the swivel-yoke, means for automatically adjusting the trimming-head relative to the work-holder to cause the shear-wheels to follow a predetermined course other than a circle as said head and holder relatively revolve, means for mechanically adjusting the trimming-head relative to the holder, and. .means cooperating with a part of the swivel-yoke Yfor automatically adjusting the same to positively maintain the axes of the shaar-whee s perpendicular to the predetermined line of cut of the work at the point of bite of the wheels as the workholder and trimming-head relatively revolve.

13. 1n combination, in a machine of the class described, a table, a work-holder mounted thereon, trimming and beading-heads associated with the table and radially movable relative thereto, a plurality of cam-ways fixed to the table and encircling the workholder, two of said ways beingl fashioned to conform to the shape of the work when trimmed and one cooperating with a part on the trimming-head and another cooperating with parts on the beading-heads to automatically move said heads radially of the table to cause the work to be marginally trimmed to a predetermined shape other than a circle and beaded as the table and heads relatively revolve, and a swivel-head carried by the trimming-head and carryingl shear-wheels, said swivel-head havingl a part working in one or the other of said cam-ways and coperating therewith to positively control the swingingI movements of the swivel-head during the trimming' operation.

14. 1n amachinc of the class describeiil, the combination with a work-hohler, of a plate slidingly mounted at the side thereof for longitudinal movement toward and away from the work-holder, a trimming head mounted on the plate for movement longitudinally thereof, a horizontally pivoted member carried by the head, and an adjusting-screw threaded through said member and adapted to be placed in removable engagement with a part of said plate to permit a screw adjustment of the head thereon or swung out of engagement with the plate to permit a free manual adjustment of the head thereon.

15. ln a machine of the class described, the combination with a work-holder, of a member slidingly mounted at the side thereof for movement toward and away from the workholder, a trimming-head mounted. on the member for .movement relative thereto toward and away from the work-holder, and an adjusting-screw threaded to a part of said head and adapted to lbe placed in removable engagement. with a part of said member to permit a screw-adjustment of the head thereon, or swung laterally out of engagement with the member to permit a free manual adjustment of the head thereon.

lo. lna machine of the class (,lescribed, the comliination with a werk-holder, of a member slidingly mounted at the side thereof for movement toward and away from the workholder, a beading-heini mounted on themcmber for movement relative thereto toward and away from the work-holder, and an adjusting-screw threaded to a part. of said head and adapted to be placed in removable engagement with a part of said member to permit a screw-adjustment of the head thereon, or swung laterally out of engagement with the member to permit a free manual adjustment of the head thereon.

17. 1n combination in a machine of the class described, a Dwork-holder and a trimming-head capable of relative revolving movements, means for automatically adjusting the head radially of the work-holder as they relatively revolve, and. means movable both to e'llcct a mechanical adjustment and to permit a manual adjustment of the head radially of the work-holder.

1S. ln combination in a machine of the class described, a work-holder and a beadinghead capable of relative revolving movements, means for automatically adjusting the head radially to the work-holder as they relatively revolve, and means movable both to e'ii'ect a mechanical adjustment and to permit a manual adjustment of the head radially of the work-holder.

1). 1n combination in a machine of the class described, a work-holder and a swivelhead capable of relative revolving movements, and. two cams encircling the workholder, said swivel-head. having a guide part in line with its ai is of swivel movement and a guide part olf-set from such axis each of f@ esefraey which coacts with different Ones of said cams, j adjustable relative to said first part and coone cam serving to adjust the head radially acting with the other cam means to control of the work-holder and the other to control the swivel movements of the head. the holder relatively revolve.

20. .In combination in a machine of the In testimony whereof, I have hereunto class described, a \Vorl liolcler and a swivelsigned my name to this specification in the head capable of relative revolving mcvepresence of two subscribing witnesses. ments, anc .se arate cam means encirc in T the work-holdfli", said swivel-head having la JOHN M' SKINNER part coacting with one cam means to adjust /Vitnesses: the head radially of the work-holder as they C. W. OWEN, relatively revolve and a part differentiallyY l HAZEL B. HIETT.

the swivel movements of the head as it and 15

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