US398962A - Multiple drilling-machine - Google Patents

Description

5 Sheets--Sheet 1 (No Model.)

B HAMMOND MULTIPLE DRILLING MACHINE.

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R. HAMMOND. MULTIPLE DRILLING MAGHINE.

No. 398,962. Patented Mar 5, 1889 INVENTOR,

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MULTIPLE DRILLING MACHINE.

No. 398,962. g I Pa Mar. 5. 1889.

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5 Sheets-Sheet 4. R. HAMMOND. MULTIPLE DRILLING MAGHINE.

Patented Mar. 5, 1889.

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B HAMMOND.

MULTIPLE DRILLING MACHINE.

No. 398,962. Patented Mar. 5, 1889.

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UNTTnn STATES aTnNT @rrrcn.

RICHARD HAMMOND, OF BI FFALO, NElV YORK.

MULTIPLE DRILLING-MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 398,962, dated March 5, 1889.

Ap li ti 1 1 May 29, 1888. Serial No. 275,428. (No model.)

To aZZ whom, it may concern:

Be it known that. I, RICHARD HAMMOND, of llulfalo, in the county of Erie and State of New 'Y ork, have invented a new and Improved Multiple Drilling-Machine, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved multiple drilling-machine especially adapted for drilling apertures for the rivets in boiler or other plates after the latter are formed and in place, so as to perfectly match the apertures in the plates to be fastened together.

The invention consists of a central drillingtool and of two outer drilling-tools held parallel with the said central drilling-tool and mounted in bearings held to swing from the said central drilling-tool.

The invention also consists of certainparts and details and combinations of the same, as will be fully described hereinafter, and then pointed out in the claims.

Reference is to be had to the accompanyin drawings, forming a part of this specification, in which similar letters of reference indicate eorrespomling parts in all the figures.

Figure l is a side elevation of the improvement as applied, showing the boiler-plates in section. Fig. 2 is a ltmgitudinal sectional elevation of the same. Fig. 3 is an enlarged sec tional elevation of the drill-head. Fig. i is a plan view, partly in section, of the rear end of the improvement. Fig. 5 is an enlarged sectional end elevation of the improvement on the line a: a; of Fig. 2. Fig. 6 is an inverted plan view of the drill-block; and Figs. 7, 8, f), and 10 show ditlerent arrangements of the holes as bored by the machine. Fig. 11 is a side elevatimi of theimprovement as applied.

On the base plate A are secured the columns l and .0, of which the former is provided on its upper end with a head, .13, in the top of which is mounted to rotate in suitable bearings the longitudinal drivingshaft. D, provided with the usual pulleys, D, connected by a belt with suitable machinery for imparting a rotary motion to the said driving-shaft D. In the middle of the shaft Dis secured a pinion, D meshing into a gear-wheel, D provided with a hub, I), mounted to rotate in the bearings B formed in the middle of the head 13.

The huh I) is provided with a fixed key fitting into a groove, E, formed longitudinally in the drill-shaft E, passing through the said hub D", so that the rotary motion of the gearwheel D is transmitted to the said shaft E, and the latter is at the same time permitted. to slide longitudinally in the hub of the said gear-wheel D". On the outer end of the shaft E is secured the drilling-tool F, of any approved construction, and. near the outer end of the said shaft is secured a gear-wheel, G, meshing into the geai wheels G and G secured on the shafts G and G", respectively, carrying at their outer ends the drilling-tools F and F respectively, held parallel with the central drilling-tool, F, and at equal distances from. the same.

The shafts G and (-lare mounted to rotate in suitable bearings, ll and II, respectively, each being made, preterably, in two pieces and in. U shape, and having its ends pivoted on the central d rill-shaft, E, as is plainly illustrated in Figs. 3 and Thus the bearings ll and ll" can be turned on the central shaft, E, so that the drilling-tools 1* and F respectively, carried by the said bearings H and ll, respectively, will always remain equidistant from the said central drilling-tool, F. The U-shaped bearings ll and ll are provided at their middle part with longitudinal bolts J and J, respectively, each having a head, J passing into an annular groove, K formed in the face-plate K, provided with a rearwardly-extendi n g hub, K, through which passes the central shaft, E, having a box, L, fitting into the said hub K, and resting on one side of a collar, E formed on the said central shaft, E. One end of the bearing H, above mentioned, rests on the other side of the said collar E and the other bearing, H, is prevented from shifting longitudinally by a collar or nut, ll screwing on the front end of the central shaft, E, as is plainly shown in Figs. 2 and 3.

On the outer ends of the bolts .1 and J screw the nuts J, so as to fasten the respect.- ive bearings ll and ll firmly to the face-plate K by adjusting the said nuts If. ()n the sides of the bearings ll ll. are formed flanges, through which pass additional bolts, H, extending into the annular slots K and serving to assist in securing the bearings ll H to the said face-plate K. The latter is secured by bolts K to a collar, N, provided with a hub, N extending rearward ly concentric with the shaft E and the hub K, before mentioned. In this hub N are formed longitudinal slots N into which project the keys B secured on a hub, B projecting from the front end of the box B, and arranged concentrically with the bearings D and the central shaft, E. Thus the hub N surrounds the hub B and the latter-surrounds the hub K, and through the latter passes the central shaft, E.

On the outside of the hub N is formed a thread, N on which screws a nut, 0, provided with a hand-wheel, O, for turning said nut, and the latter is provided with an annu lar groove, 0 formed near its rear end. Into this annular groove O fits a split ring, P, secured in the bracket P,fastened in any suitable manner to the front end of the head B Thus when the hand-wheel O is turned it imparts a like motion to the nut O, which revolves'in the stationary split ring P, so that the hub N is moved forward or backward longitudinally, according to the direction in which the hand-wheel O is turned. The outward movement of the hub N causes a like movement of the face-plate K, the shaft E, and the bearings H. and 11, carrying the drilling-tools F and F The hub Nis prevented from turning on account of the stationary keys B engaging corresponding slots in the said hub N.

In the column O is held to slide longitudinally a sleeve, O, adapted to be secured at any convenient height by a set-screw, O screwing into the column 0 against the outside of the sleeve O. On the top of the sleeve O is held to slide forward and backward a frame, Q, carrying in its front end a transverse wooden block, Q, adapted to rest against the inside of the inner plate, R, to be bored and riveted in connection wit-l1 the plate R, held on the outside of the said plate R.

The plates 'R and R form the boiler-shell R suspended at its upper end on the chains T, secured to a swivel, U, held on the sheave U, supported by the chain U extending upward and over pulleys on the carriage V, mounted to travel on the frame \V, held to travel on tracks supported by the posts XV. One end of the chain U is secured to a fixed block, U held on the frame V, and the other end of the chain U is connected with a hydraulic ram, U", or other suitable means for raising or lowering the sheave U and th boiler-shell R The carriage V can be moved forward and backward on the frame TV by a chain, V, connected with its ends to the said carriage and passing over the pulleys V and V", mounted on the frame \V, and of which one is rotated bya chain or rope, V, passing over a large pulley on the shaft of the said pulley V".

The operation is as follows: The plates, R and R, to be riveted together are formed in the desired shape, then fitted over each other and temporarily secured in this position by suitable means. The plates R and R are then passed between the block Q and the drilling-tools F, F, and F, the latter being set to drill apertures in the said plates R and R and arranged in any desired manner, as illustrated in Figs. 7, 8, S), and 10that is, the drilling-tools F, F, and F may be set directly above each other, as illustrated in Figs. 1, 2, 3, and 5, so as to drill simultaneously three apertures located one above the other in a straight line, as shown in Fig. 9. By loosening the nuts J on the bolts J and J the bearings H and H may be swung up or down, so as to stand at right angles to each other. Thereby the drilling-tools F, F, and F can simultaneously form apertures in the plates R and R, as illustrated in Figs. 7 and S. The bearings H and H, after being swung to the desired position, are again fastened to the front plate, K, by adjusting the nuts J The bearings H may also be set so that the drilling-tools F and F are above and below the central drilling-tool, F, whereby the three drillingtools form simultaneously apertures in the boiler-plates R and R, as illustrated in Fig. 10.

The plates R and R, forming the shell, are suspended, as shown and described, and are raised or lowered by the ram U The shell can be turned the desired distance for drilling a new set of apertures, as the swivel U permits such motion. The carriage V isadj usted on the frame \V according to the diameter of the shell R so as to bring the respective plates R and R directly out on the block Q.

The rotary motion of the driving-shaft B is transmitted by the pinion D and the gearwheel D to the central shaft,E,whieh,bythe gear-wheel G, meshing into the gear-wheels G and G imparts a rotary motion to the shafts G3 and G", carrying the drilling-tools F and F so that the three drilling-tools F, F, and F are rotated simultaneously but the central drilling-tool, F, rotates in an opposite direction from the drilling-tools F and F so that the latter are formed either right and left handed and the central tool left or right handed. The operator then takes hold of .the hand-wheel O and turns the same'so as to impart a forward sliding motion by the nut O to the hub N, carrying the face-plate K, on which are secured the bearings H and H, and which face-plate, in connection with the bearings, carries the central shaft, E, forward by means of the collar E resting between the said bearing H and the face-plate K. Thus the three drilling-tools F, F, and F are advanced simultaneously, and also receive a simultaneous rotary motion. The drillingtools can thus drill into the outer plate, R, and then through the inner plate, R, thus forming three apertures at a time, said apertures being lo rated in such a position in relation to each other as above described in reference to Figs. 7, 8, .l, and lb.

The block Q in the frame Q is held directly in front of the tools, so that the latter, after boring through the inner plates, It, pass into the said block Q to prevent the tools from breaking. \Yhen the holes are drilled, the operator turns the hand-wheel O in an opposite direction, so that the drilling-tools F, F, and F pass out of contact with the plates it and It, after which the said plates are turned, raised, or lowered the required distance, and the above operation repealed to drill anew set of holes in the said plates. Thus three holes are drilled in the said plates simultaneously, as shown in Fig. 7, S, 9, or it], or any other angle. If it is desirable to drill only two holes, any two of the three drillinglools may be used for this purpose; but when it is desired to drill only one hole, then either one of the three drilling-tools may be used.

ldo not limit myself to the peculiar construct-ion shown for raising or lowering the plates R- and R, forming the shell R as any suitable hoisting mechanism can be en'iployed.

l have tiled a separate application, Serial 99, for the method involved in the operation of this machine.

Having thus described my invention, whatl claim as new, and desire to secure by Letters llatcnt, is"

1. In a drillinganaehine, the combination, with a central drilling-toohot' two outer drilling-tools held parallel with the said central drilling=tool and mounted in bearings held to swing from the said central drilling-tool, substantially as shown and described.

2. In a drilliug-machine, the combination, with a central shaft carrying a. drilling-tool, of two outer parallel shafts rotated from the said central shaft and mounted in bearings pivoted on the said central shaft, substantially as shown and described.

3. In a drilliug-machine, the combination, with a central shaft carrying a drilling-tool, of two outer parallel shafts, each carrying a drilling-tool and rotated from the said central shaft, and bearings carrying the said outer shafts and pivoted on the said central shaft, substantially as shown and described.

in In a drilling-machine, the combination, with a face-plate, of a central shaft held to rotate in the said face-plate and carrying a drilling-tool, two outer parallel shafts, each carrying a drilling-tool and rotated from the said central shaft, and bearings carrying the said outer shafts pivot-ed on the said central shaft, said bearings being adapted to be secured to the said face-plate, substantially as shown and described.

5. In a drilling-machinc, the combination, with a face-plate mounted to slide forward and backward, of a central shaft passing through the said face-plate and carrying a drilling-tool, two outer parallel shafts, each, carrying a drillingtool. and rotated from the said central shaft, and bearings carrying the said outer shafts and pivoted on the said. central shaft and adapted to be secured to the said face-plate, substantially as shown and described.

o. In a drilling-machine, the combination, with a face-plate and means, substantially as described, for imparting a forward and backward sliding motion to the said face-plate, of a central shaft passing through the said faceplate and carrying a. drillingtool, two outer parallel shafts, each carrying a drilling-tool and rotated from the said central shaft, and bearings carrying the said outer shafts and pivoted on the said central shaft and adapted to be secured to the said face-plate, substantially as shown and described.

7. In a drilling-1nachine, a face plate mounted to slide forward and backward and provided with an annular slot, in combination with a central shaft mounted to rotate in the said face-plate and sliding forward and backward with the same, two outer parallel. shafts rotated from the said central shaft, bearings carrying the said outer shafts and pivoted on the said central shaft, and bolts passing into the said annular slots and through the said bearings to secure the latter to the faceplate, substantially as shown and described.

S. In a drilling machine, a face plate mounted to slide longitudinally, a central shaft mounted to rotate in and sliding with the said face-plate, two outer parallel shafts rotated from the said central shaft, and bearings carrying the said outer shafts and pivoted on the said central shaft and connected with the said face-plate, and drilling-tools secured to the said central and outer shafts, in combination with a wooden block held in front of the said drilling-tools, a frame carrying the said block. and mounted to slide horizontally, a table in which the said frame is held to slide, a sleeve carrying the said table, and a column in which the said sleeve is held vertically adjustable and mounted to turn, substantially as shown and described.

' RICHARD I IAMMOND.

Witnesses:

JOHN Coon, F. \V. THOMPSON.

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