US402582A

US402582A - geanms

Info

Publication number: US402582A
Authority: US
Publication date: 1889-05-07
Anticipated expiration: 1906-05-07

Description

UNITED rSTATES PATENT OFFICE.

HIAL s. eRANNIs, oF soUTHiNGToN, CONNECTICUT, AssieNoR To THE PECK, s'row a wILCox COMPANY, CE SAME PLACE.

STOVE-PIPE FRM ER.

SPECIFICATION forming part of Letters Patent o. 402,582, dated May '7, 18`89.

Application filed February 6, 1889,. Serial No. 298,393. (No model.) f

To @ZZ whom it may con/cern:

Be it known that I, HIAL S. GRANNIS, a citizen of the United States, residing at Southington, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Stove-Pipe Formers, of which the followingV is a specification.

My invention relates to improvements in stove-pipe formers; and the principal object of my invention is to provide convenient and efficient meansfor releasing and tipping the roller around which the pipe is formed, so that the pipe may be slipped endwise off the roller, thereby making what is called a slip-roll former.

'In the accompanying drawings, Figure 1 is a front elevation of my former with the middle portion broken away. Fig. 2 is a side elevation of the right-hand end. Fig. 3 is a side elevation of the left-h and end with the hinged box thrown backward and the upper roller tilted. Fig. 4 is a perspective view of the upper end of the frame for the right-hand end of the former. Fig. 5 is a vertical section on line Fig. 3, of the right hand end of said former, some of the parts being shown in elevation. Fig. 6 is aside elevation showing the outer side of the box for the upper roller at the righthand end of the machine; and Fig. 7 is aV transverse section, on line y y of Fig. 3, of the hinged box for the upper roller. at the left-handend of the machine.

A designates the frame for the right-hand end of the machine, and B the frame for the left-hand end of the machine.

C designates the upper roller, and DVD the lower rollers, while EV designates the tie-rod which holds the two end frames in place. The two lower rollers, D D, are adjusted to and from the upper roller by means of the adjustf ing-screws 8, which bear against the under side of the sliding boxes 9, in which said rollers take their bearings. i

At the left-hand end of the machine the upper roller takes its bearing in the recess 10, Fig. '7, of the hinged box 11, said bearingrecess being indicated by broken lines in Fig. 3. i This hinged box is hung upon the frame B by any suitable hinge, as at 12,Fig. 3,while its outer end is slotted and provided with a pivotal'link or strap, 137 to the other end of which link is pivoted the cam-lever 14. At the front part of the frame B is a projecting lug, 15, which is slotted vertically to receive the body of the link 13. When the hinged box 11 is brought down over the journal at that end of the upper roller, C, and the calnlever is held in substantially a horizontal position, the lower end of the link 13 may be slipped into the slot in the slotted lug 15, after which by depressing said cam-lever -into a vertical position, as shown in Fig. 2, the hinged box is firmly drawn down and secured in place. By reversing the operation the hinged box is released again and may be turned backward on its hinge, as shown in Fig. 3, thereby lreleasing that end of the upper roller.

While I prefer to slot the lug 15 so that the link or strap 13 shall be received in the slo thereof and the cams upon both sides of said strap bear upon said lug, this is not essential, as the parts would operate the same if all that portion of the lug on one side of its slot were removed, in which case the cam 14 would be held by a lug at one side only of the link 13.

At the right-hand end of the machine one of the lower rollers, I), is provided with an ordinary driving-crank, F, and a pinion, G, which meshes into a like pinion, H, 011 the upper roller, C. The right-hand end of said roller is provided with a shaft-like projection, 16, in which is formed a peripheral groove, 17. The frame A is provided with ahorn or rigid projection, 18,-which extends over the shaftlike proj eotion 16 of the upper roller, and its inner face is formed with'a bead, 19, fitted to the groove 17, which bead forms the fulerum or central point upon which the upper roller, C, may be tilted. vThe upper roller, C, at this end of the machine has its bearing in the box 20, which box is provided with side ledges, 21, for bearing upon the xed ledges 22 of the frame A at the respective sides of the recess that receives said box. These ledges 22 project slightly from the inner face of the frame A and are curved toward their upper end on the arc of a circle whose center is the bead or fulcruin 19, on which the roller C is tilted. The confronting faces of the ledges 21 are formed on a corresponding curve, as shown in Fig. 1. The box 2O is lifted and let down by IOO means of the lifting-screw 28, upon the squared upper end of which screw is placeda wrench, 2l, for convenience of turning said screw. This screw is connected with the box in such manner as to allow freedom of the box to rock or tilt thereon. I have illustrated the screw as connected with the box by means of a knob, 25, at its lower end, which knob takes into a transverse recess, 26,having overhanging shoulders in the boxes. (See Figs. 5 and (i.) This particular connection of the box and lifting-screw is made the subject of a separate application, Serial No. 298,895, of even date herewith.

It is only essential to my present invention that the lifting-screw 23 and box 20 be connected by some means that will permit of the rocking motion of said box. I also provide the upper end of the frame A with two lugs, 27, to limit the movement of the wrench 24 to half a turn. These lugs are not essential, but are a matter of convenience, as they are intended to limit the movement of the wrench to that half-circle which is outside ot" the frame, and consequently the wrench will not be brought over the body of the rollers, so as to be in the way of the work being formed thereon. A half-revolution of the lifting-screw is ample for the purposes of my invention.

The lifting-screw 23 and the box 2O are so adj usted that when the 'wrench 24 is carried around against the rear one of the lugs 27 that end of the rollerwill be in proper position for use and will coincide substantially with the opposite end of the roller as held in place by the hinged box 11. Said box 11 and the rigid horn 18 render the upper roller, C, non-adj ustable by fixing the height for the working p0- sition of said roller. Vhen in this position, the lower rollers will be adj usted to the upper roller for the work desired. Aftera pipe has been formed on said rollers the hinged box is turned backward on its hinge and the wrenchhandle brought around toward the front to litt the box 20, thereby lifting also the roller C, causing it to tilt orswing uponits fulcrumbead 19, so as to elevate the left-hand end, as shown in Figs. 3 and 5, suiiiciently to enable the pipe to be slipped oit from said upper roller. The wrench 2l is then turned back again to its rearmost position and the hinged box again secured over the left-hand end of the upper roller, and the machine is ready for forming another pipe.

The class of slip-rollerformers to which my invention relates is an old one, and one prior patent in this class shows a box for one end of the upper roller as made of two parts adjustable to and from each other and secured for being adjusted vertically together in a hinged yoke that swings on an axis extending transversely to said upper roller, while the opposite end of said upper roller is mounted in a hinged bearing adjustable vertically in the frame by an adj listing-screw, said hinged bearing forming the axis of said upper roller for tilting it. Said upper roller is also extended beyond its hinged bearing in a shaftlike projection to a third verti cal ly-ad j ustable bearing for the purpose of preventing thc opposite end of the roller from falling when the bearing in the hinged yoke is removed therefrom. The two lower rollersin said machine are non-adj ustable. All of said prior art is hereby disclaimed.

I claim as my invention- 1. The combination of the non-adjustable upper roller, C, hinged box 11, for holding and releasing one end of said roller, mechanism for tilting said roller, and two under rollers provided with adjusting-screws 8, for adjusting said under rollers relatively to the upper tilting roller, substantially as described, and for the purpose specified.

2. The combination, in a former, of the hinged box 11, the upper roller, C, provided with a shaft-like projection having a peripheral groove, 17, the rigid horn 18 upon the frame, provided with a fulcrum-bead for said shaft-like projection, the box 20, and liftingscrew 23, for lifting said roller and swinging it on its fulcrum at the end of the rigid horn 18, substantially as described, and for the purpose specified.

3. In aformerhavingan upper tilting roller, the combination of the frame B, provided with the lug 15, the hinged box 11, for holding one end of said upper roller, the link 13, hinged to the outer end of said box, and the cam-lever 14, substantially as described, and for the purpose specified.

4. In a former having an upper tilting roller provided ywith a shaft-like projection having the peripheral groove 17, the frame B, having the horn 18 and fulcrum-bead 19, fitted to said groove 17, the projecting ledges 22, also formed on said frame, and the box and lifting-screw connected thereto, said box 2O being provided with side ledges, the faces of which, together with the faces of the ledges 22, are on the arc of a circle of which the fulcrum-bead 19 is the center, substantially as described, and for the purpose specified.

IIIAL S. GRANNIS.

IVitnesses:

ELBERT O. MOORE, AUGUsTINE M. LEWIS.

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