US354570A - norton - Google Patents

Description

(No Model.) 2 Sheets- Sheet 1.

E. NORTON an J. G.H0DGS0N. MACHINE FR MAKING SHEET METAL BARRELS.

`(No Model.)l 2 Sheets- Sheet 2. Y E. NORTON 8v J. G. HODGSON MACHINE FOR MAKING SHEET METAL BARRELS.

PatentedDeo. 21, 1886.

M fm Lf, 2@ 0 UNITED STATES PATENT OFFICE.

EDWIN NORTON AND 'JOHN G. HODGSON, OF CHICAGO, ILLINOIS, ASSIGNORS TO EDVIN NORTON AND OLIVER XV. NORTON, BOTH OF SAME PLACE.

MACHINE FOR MAKING SHEET-METAL BARRELS.

SPECIFICATION forming part of Letters Patent No. 354,570, dated December 21, 1886. Application filed September 3, 1886. Serial No. 212,570. (No model.)

To all whom 25v may concern:

Be it known that we, EDWIN NORTON and JOHN G. HoDGsoN, citizens of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Machines for Manufacturing Sheet Metal Barrel Form Bodies, of which the following is a specification.

Our invention relates to the manufacture of barrel-form sheet-metal bodies having goreshaped or tapering longitudinal strengthening ribs or folds marking the divisions between the staves.

The object of the invention is to provide a machine -to curve or form a rectangular sheet of met-al into an approximately circular form, and at the same time mark out or `partiall y form the gore-shape or tapering longitudinal fold, which, when completed, gives 1 he body a barrel shape by contracting its circumference more at each end than at the middle.

To this end our invention cbnsists in a pair of forming or curving rolls furnished with in termeshing gore-shaped longitudinal grooves and projections tapering from each end toward the middle, which serve to form a series of longitudinal gore shaped or tapering grooves or partial folds in the sheet of metal at the time it is being curved into an approxi` mately cylindrical form by the rolls and the curved guide or former. By increasing or diminishing the "inclination of the sides of the tapering grooves and projections any desired degree of curvature may be given to the body. Where the machine is designed simply to produce strengthening longitudinal ribs or folds in a cylindrical body without giving it a curved or barrel form, the grooves and ribs on the rolls will be made of the same size throughout from one end to the other. The number of the longitudinal grooves and ribs on the rolls may be varied, and will depend somewhat on the size of the rolls and the diameter of the sheetmetal body to be produced. Their distance apart circumferentia'lly on the rolls will of course correspond to the width of the staves to be made on the barrel-form body.

The invention also consists in the novel de- 5O vices and novel combinations of devices herein shown and described, and more particularly l pointed out in the claims.

In the accompanying drawings, which form a part of this speciiication, and in which similar letters of reference indicate like parts, 5 5 Figure lis an end view of a machine embodying our invention. Fig. 2 is a front elevation. Fig. 3 is a plan View. Fig. 4 is a crosssection of the rolls on line 4L 4 of Fig. 3. Fig. 5 is a cross-section on line 5 5 of Fig. 8. Fig. V6 is a 6o detail central longitudinal section, showing the clutch mechanism; and Fig. 7 is a perspective view showing the sheet-metal body as formed by the machine, said body being ready to be completed by pressing or squeezing the walls of the partially-formed folds together. i

In said drawings, A represents the frame of the machine. B B are the forming-1'ollsjour naled in suitable bearings thereon. The up- 7o per roll, B, is furnished with one or more (preferably three) longitudinal grooves, b', tapering from each end toward the middle, and the roll B is furnished with corresponding tapering ribs or projections, b. The roll B is furnished with cross beads or ribs b2, and the roll B with corresponding cross-grooves, b3, to form the cross-beads representing hoops in the sheet-metal body.

C is a stationary curved guide or former, 8O which serves to curve the sheet into an approximately cylindrical form as it passes between the rolls B B'.

A isa feed-table, and a a are feedguides for the edges of the sheet to abut against7 to in- 85 sure its being fed squarely to the rolls. The grooves b and ribs b are preferably of a triangular form in eross-section, as indicated in the drawings, so that the apex of the triangle will mark the central line, d', of the fold d, 9o while the marginal lines d2 d2 of the fold will be marked by the outer edges of the groove and rib. In this way the grooves b and ribs b mark the line and begin the folding of the stock on4 the lines whereon it is to be completed 95 by the subsequent step of compressing the walls of the fold ilat together.

As one of the folds d of the sheet D is formed by the similar abuttingilanges, d3 d3, on the Opposite edges of the sheet, which,when 10o abutted together and soldered, constitute the side seam of the sheet-metal barrel-body, it is important that when the sheet is fed in between the rolls B B' its front edge should properly register with one of the intermeshing grooves and ribs b b' of the rolls, and to effect this we provide the rolls, or one of them, with a clutch adapted to always stop the roll at the proper point for feeding in the next sheet, so that when the sheet is pushed in between the rolls and the rolls then put in motion the edge of the sheet will properly register with one of the grooves and ribs b b' on the rollsB B'. The rolls BB' are geared together by the spur-gears B2 B2 on their shafts. rlhe shaft B3 of the lower roll, B, is furnished with a loose spur-gear, F, which meshes with the gear F', fixed .to the driving-shaft F2.

F3 is the drivingpulley.

G is the clutch-head, secured rigidly to the shaft BH The clutch-head is connected to or disconnected from the loose gear F by means of the sliding pin or pawl g, which engages a projection, f, in the annular chamber or groove f', cut in the side face of the gear F. The sliding pin g is provided with a cam- 'shaped head or projection, g', preferably an inverted-cone-shaped friction-roller, mounted on a stud, g2, which projects through a slot, g3, in the clutch head or wheel G.

H is a clutch-lever having a corresponding cam-face, h, adapted to operate against the inclined or cone face of the projection or friction-roller g' and disengage the pin g from the stop or projection f. A spring, g4, serves to move the sliding pin g in the opposite direction.

K is a stop lever or pawl pivoted to the frame or bracket thereon, the end of which engages a stop-notch, k, in the rim lc' of the clutch-head G. The levers H and K are simultaneously operated from a treadle or lever, L, through the connecting-rods L' and L2. The shaft B3 is also furnished with a friction-brake, M, which clamps the clutch-head G or a collar or shoulder turned thereon. The friction-clamps M are secured to a bracket, m, attached to the frame of the machine. The friction-brake serves to stop, or tends to serve to stop, the revolution oi' the rolls B B' the instant the clutch-pin g is disengaged from the loose pulley F. The stop-lever K, however, causes a positive arrest of the revolution of the rolls at a xed point by its engagement with the notch or stop k.

In operation the spring L3 serves to hold or press the lever H down the moment the operators foot is removed from the treadle L, and as the clutch-head revolves the projection g' is carried around against the cam-surface h of the lever H, thereby retracting the sliding pin g from the gear F whensaid projection g' reaches its vertical position, as shown in Fig. 1, and at the same time the lever or pawl K engages the notch k, and thus arrests the motion of the rolls B B' always at the same point. After the front edge of the sheet is inserted between the rolls, the operator, by placing his foot upon the treadle, disengages the stop-lever K from the notch 7c, and at the same time raises the lever H, and thus permits the sliding spring-pin g to engage the gear F.

The rolls B B are forced together with the requisite pressure by the adj usting-screws N.

The sheet-metal body or barrel herein referred to, as well as other mechanism used in the process of making the same, form the subject-matter of separate applications filed of even date herewith by Edwin Norton, and are not herein claimed. v

The longitudinal grooves and ribs b b' taper on slightly-curved lines, as indicated in Figs. Y

2 and 3, and also in Fig. 7, so as to give the body a true barrel shape or curvature from end to end.

Ve claiml. The rolls B B', furnished with a longitudinal gore-shaped or tapering intermeshing groove and rib, substantially as specified.

2. The rolls B B', furnished with a longitudinal gore-shaped or tapering inter-meshing groove and rib, in combination with a curved guide orvformer, C, substantially as specified.

3. The rolls B B', furnished with a longitudinal gore-shaped or tapering intermeshing groove and rib, in combination with a clutch mechanism adapted to stop and start said rolls always at a certain point, so that said rib and groove will register with the front edge of the sheet, substantially as specified.

4. The combination of the rolls B B', furnished with intermeshing longitudinal triangular grooves and ribs b b', said rolls having smooth intervals between the contiguous grooves or ribs thereon, with a curved guide or former, (l, and mechanism for stopping and starting said rolls always at a certain point, so that one pair of said ribs and grooves will register with the front edge of the sheet, substantially as specied.

5. The combination of the rolls B B', furnished with intermeshin g longitudinal ribs and grooves,with loose gear F,having slot or groove f', projection f, clutch-head G, having sliding pin g, provided with projection g', lever H, having cam-surface h, stop-lever K, operatinglever L, and connecting-rods L' L2,substantiall y as specified.

6. The combination of the rolls B B', furnished with intermeshin g longitudinal ribs and grooves, with loose gear F,havin g slot or groove f', projection f, clutch-head G, having sliding pin g, provided with projection g', lever H, having cam-surface h, stop-lever K, operatinglever Lconnectingrods L' L2, and frictionbrake M, substantially as specified.

7. The combination of the rolls BB', furnished with intermeshing longitudinal triangular grooves and ribs b b', with a curved guide or former, C, mechanism for stopping and starting said rolls always at a certain point, table A', and feed-guides a a, substantially as specied.

8. The rolls B B', furnished with internleshing longitudinal gore shaped or tapering l0. The rolls B B', furnished with longi- 1o grooves and ribs b b', and transverse orosstudinal ntermeshing grooves and ribs b b', tabeads and grooves b2 b3, to form thehoops,sub pering on curved lines from each end toward stantially as specified. the middle, substantially as specified.

9. The rolls B B', furnished with intermesh- EDWIN NORTON. ing gore-shaped or tapering longitudinal g u JOHN G. HODGSON. grooves b b', triangular `in cross-section, and Witnesses: transverse hoop-beads and grooves b2 b3, sub- Y S. W. NORTON,

stantially as specified. O. R. SWIFT.

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