US1440493A - Assembling press - Google Patents

Description

"Jan. 2, 1923.

, MIMI-(M93;

J. L. REED.

ASSEMBLING PRESS.

FILED APR.30, 1921. 2 SHEETS-SHEET Inxfenm Jo /622 Z fieea/ Fat-ented c an, 2, Eg -3? tra ns JOHN L. 0.? LEZT'KGNE, ILLINOIS, ASSIGNQR TQ ALUMINUM PRODUCTS COML ANY, OF CHICAGO, ILLINOIS, A COBPGRATIUN OF ILLINOIS.

ASSEMBLING PRESS.

Application filed. April 30,

To all whom it may conocm Be it known that l, Jenn .1. Reno, a citi- Zen of the United t ltates, residing at Lemont, in the county of Cook and State of .lllinois, have invented certain new and use ful Improvements in Assembling Presses, of which the following is a. specification.

My invention relates to a machine for assembling perforated parts in securely attached relation to a carrying tubular part, and in some of its features has to do more particularly with assembling and securing together the: parts of a percolator liner.

ltn coffee percolators it is common to provide a liner comprising a spherically arched foot opening to and attached to the lower extremity of a vertical stem or tube and to attach to the tube below the upper end thereof a perforated coffee-basket of cup-shape. By the mechanism hereinafter described one may, with a single operation of the press, [in the several parts in desired assembled relation, heading the tube above and below the bottom of the coffee-basket and above and below the metal of the foot.

in general the object of my invention is to provide assembling machine or press that is simple, efficient and durable, in which press the several parts of the liner may easily and quickly be placed in loosely assembled relation and securely and adequately held in position for the succeeding operations; and by the operation of which press through a single rapid stroke the tube may be re-shaped to throw out the retaining beads that will permanently and firmly attach the basket and foot thereto in precisely the desired relation, all with minimum possibility for error or failure to produce a perfect assembled product.

With a view to attaining these and other objects which will become apparent to those skilled in the art from the following description, my invention consists in the features of construction and combinations and arrangements of parts hereinafter set forth and claimed.

in the drawings, wherein l have illus trated a single embodiment of my invention, Fig. 1 is a side elevation, with parts broken away, showing the assembly press; Fig. 2 is a fragmentary section on line 22 of Fig. 1; Fig. 3 is a fragmentary view taken on line 33 of Fig. 1; Fig. 4: is a versection through a complete percolator liner in the assembling of the parts whereof the press is employed; Fig. 5 is a central vertical section, from front to rear, through the press in condition of use; and Fig. 6 is a vertical section in a transverse plane, on a somewhat enlarged scale, taken generally on line 6-6 of Fig. 5.

The vertical frame 10 carries in its guides ii a plunger 12 having a head 13 to cooperate with the upper end of the liner-tube. Any simple means may be provided for forcibly depressing the head, such as hand lever 14 pivoted at 15 to the plunger and fulcrumed 16 on the swinging link 17 that finds bearing in the frame, a counterweight 18 being suitably connected with the handle normally to hold the plunger and head in raised position.

0n the over-hung base portion 20 of the frame are arranged the foot-blocks 21 and a pressure clamp structure 22, the former to receive the prepared foot of the liner and the bottom extremity of the tube on which said foot will loosely be assembled, and the pressure clamp to receive the mid-portion of the tube and properly position it, together with the basket elements loosely strung thereon ready for the operation of the plunger head. I

The structure comprises two gates or jaws 23 and 23 jointly pivoted on and slidable on hinge-bolt 24: that is encircled by spring 25 normally raising the hinged end of the jaws to a height determined by the adjusting nut 26 on the bolt. When swung open these jaws expose the foot-block 21 the cylindrical stem of which extends through the base 20 and the head of which, rounded for substantial conformity with the underside of the percolator foot extends, as at 21, above the base in which is cut a recess 20 neatly to receive the margin of the liner foot. In the center of this block is a recess 27 in which is snugly mounted a centering pin 28 having a shaper-point 29 protruding through the orifice of the recess, the verti cal position of the pin being variable by adjusting bolt 30 having a lock nut 31. When one loosely assembles a liner foot a on the bottom of a. suitable section of stock for tube Z) and places the two on the foot-block, the tube-end encircles the shaping pin 29 down to the line where the latter begins its shaping-flare 29, while the foot-blank is elevated slightly: above the surface. of the foot-block by resilient means such. as the small rubber posts 32 that normally protrude slightly above 1 the spherical top surface of .the block. One may-then .close thegatesor jaws of the pressure clamp 22 to retain these parts in the stated loosely-assembled relation.

Each pressure jaw has therein a groove forming halfof the vertical stem-receptive aperture ifi, lipped at top and bottom by detachable wear plates 34} and 35, the upper plate 34: being preferably flanged as at 34 to extend-above the top of the jaw and afford guidance,forpositioning pins 36 protruding upwardly through suitable apertures in theseflanges, the'bottom heads of the pins 36 being arranged in cylindrical recesses formed in therespectivev jaws and held normally elevated by recess-contained springs 38. Neither. jaw may be closed or moved inward beyond the intended tubeepositioning position because of the provision of a stoppin 89 intervening between the jaws, which aresuitably recessed at 39 to receive it.

When. closed the jaws may be locked together by the lock bar ll) pivoted in one of them, entering a recess in the other and 'pr0 vided with a lockingthumb-nut 40'. The jaws, thus locked togethen preferably re- I ceive s ring su ort at their front or free ends one round headed bolt 41 that passes through, the base 20, is sustained by spring 42+and carriesadjusting nuts l1 .at its bottomf to {limit its vertical, spring-impelled movement. I

If one slipson the upper end of the tube stock apreformedcoffee-basket 0 and preferably its strengthening-washers d, these parts are initially supported, in position somewhatspaced above the plates 34, by the pring-pressed pins 36,:readyfor the operation 0f the plunger-head.

.Illhe plunger head 13 preferably includes a headri ng 43 the conical lower end 48 of whichwill just entenat itsbase, the baslret c, thi s ring being threaded onto the lower .portionl2 of the plunger 12 with its taperedboreis holding together two plunger 1 end members 4.5 thatmeet in a vertical plane and that arethus made separable for convenience inattaching the wear plates 46 at their ends. In these plunger j aws is made a bore 47 to receive the upper end of the tube bsothat the end of the bore may, when the plunger is depressed, thrust vertically downward on the tube. The wear plates as sur round the mouth of the bore and these are preferably flanged and are arranged to afford; .guidance for positioning pins 48 ressed-downward b s rin'ps as seated in recesses in the jaws.

a When, with the parts of the liner, a, Z), 0 and d, loosely assembled as heretofore de- 12by, meansof handle 14, therecess 47 rebulge outwardly at every point where itis the vertically and uniformly applied pressure on the tube causes the tube to tend to free from circumferential restraint. Where a bulge-tendency isthus manifestedibetween the wear-plates or die-lips 34and' i6 ofthe pressure clamp and plunger, respectively, the nietalflin' the center of this bulge-zone. is restrained. by the encompassing basket cxthat is accurately positioned, initially,mid-way between these two activepressure members. Hence the bulge-tendency at this point manifests itself in the "formation of two beads, b and?) respectively above' and belowthe basket-parts, and as the pressure is continued these bead-bulges are pinched as snugly the setting); of the device may permit, thebasketrpositioning pins -36 .and 48 yielding as the action goes forward. Atthe bottom of the tube a generally-similar action takesplace. the extreme'bottom lip of the tube extending to expand around'the shapins-base of the pin-point 29 until it =meets the wall of the recess 27in the foot-block, forming a bottom'flange or bead Z), while above the yieldingly upheld foot a, head 72 is formed. The yielding mounting of the pressure clanipenal'iles it to move vertically to accommodate the formation of; the bottom-beads simultaneously with theformation of the basket-retaining beads.

'The association of press-parts enabling and compelling thejformation of retainingbeads in pairs at spaced intervals along the stock, the operative certainty of the machine and the simplicity of its functioning to permit assembly and its single-stroke final operation all contribute to'the desired results that a deft operator can permanently assemble the liner-parts with great" rapidity and with. minimum possibilityof spoilage.

lt will be understood that while'I have fully described in somekleta'il a'particular 115 embodiment of my invention for use.1in:,the assemblyof the parts of a particular article of manufacture, I do not intendtherebyto limit my invention in its broader aspectsto the specific construction and particular use 120 vof the mcehanisn' but thatmany departures in specific embodiments of the invention may be made without departure from itsspirit, within the scope of the appendeclclaims.

lrlaim; I

l. in an assembly press, opposed means for applying endwise pressure on a tube, circumferential restraining means for actmg on portions of said tube separated by tioning an apertured part that is to be beadsecured to said tube in a zone approximately intercepting the center of said space, whereby to occasion the formation of double beading, above and below said zone.

in a machine ior permanently assembling apertured parts on a single tube at spaced intervals,relatively movable opposed means for exerting endwise pressure on the tube, an endwise movable pressure clamp for circumferentially restraining the tube between the transverse planes of parts-attachments, and means for normally positioning parts to be attached in their looseassembly relation to the tube in planes some- I what spaced from the extremities of said pressure clamp.

3. In a machine of the character described, the combinacion of a plunger having its end formed for engagement with a tube, an opposing base having a part formed for engagement with the tube, an intervening spring-sustained pressure member having bore for tubereception, and yielding means "for supporting a part that is to be attached to the tube in position initiallyspaced above said pressure member.

a. A machine set forth in claim 3 wherein the pressure member comprises a pair of gates separated on a plane intersectthe tube-bore, said gates being pivotally mounted to permit t eir opening to expose the tube-receptive part the base.

5. The structure defined in claim 4, wherein means are provided for locking the gates together in tube-embracing position.

6. The structure as defined in claim 5,

wherein stop means is provided on the base to define the locked position of the gate.

In a. device of the character described, the combination of a frame having a base below and plunger-guides above, tube-receptive means on the base, a plunger in said guides having tube-receptive means aligning with the means on the base, means for depressing said plunger to tube-engaging position and further to tube-compressing position, and, between said base and plunger, a tube-receptive pressure structure normally spring-sustained in position afl'ording, between it and the tube-receptive portions of the base and plunger when the latter is in tube contacting position, spaces for the reception of parts to be attached to the tube and clearance for the extrusion of beads above and below such parts to be attached.

8. A structure as defined in claim 7, wherein the tube-receptive means of the base includes a pin for centering and shaping the lower end of the tube.

9. A structure as set forth in claim 7, wherein the base structure and the pressure structure are provided with yielding means for supporting parts to be attached to the tube in position substantially mid-Way of the height of the clearance spaces for beadextrusion.

10. A structure as defined in claim 7, wherein the tube-receptive pressure structure comprises a pair of complemental gates meeting in a plane intersecting the tubebore, and means for latching the gates in closed position.

JOHN L. REED.

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