US693743A - Boring-machine. - Google Patents

Description

Patented Feb. I8, |902.

No. V693.743.

R. W. RUWLEY.

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(Applieation led May 17, 1901.)

2 Sheets-Sheet I.

(No Model.)

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no. 693,743. Patented Feb. la, |902.

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BORING MACHINE.

(Application lad May 17, 1901.)

2 Sheets--Sheei 2.

(No Model.)

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UNTTnn STnTns PATENT OFFICE.

RAYMOND lV. ROVVLEY, OF Sl-l. LOUIS, MISSOURI.

BomNG-MAol-HNE.

SPECIFICATION forming part of Letters Patent N o. 693,743, dated February 18, 1902.

Application filed May 17, 1901. Serial No. 60,652. (No model.)

To @ZZ whom it may concern/ Be it known that I, RAYMOND W. ROWLEY, of the city of St. Louis, State of Missouri, have invented certain new and useful Improvements in Boring-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to boring-machines; and it consists oi' the novel construction, combination, and arrangement ot' parts herein atter shown, described, and claimed.

The object of my invention is to provide an improved boring-machine especially adapted for boring Wood for the special use of electrical workers in wiring buildings where it is desired to bore a plurality of holes through opposite joists for the passage of electric cables, wires, &c.

Afurther object is to provide a machine of this class which with practically the amount of labor exerted in using the common brace and bit will bore four holes in two adjacent joists (two holes in each joist) as against one with the ordinary brace and bit in the hands of a workman.

A further object is to provide a machine of this class which in place of boring at an angle relative to the surface of the joist (as must generally be done with a brace and bit, owing to the slight space between the joists) bores straight through, whereby a series of holes can be bored in a nearly straight line through a plurality of joists and allow the wires to be drawn through several joists at the same time instead of having to draw them through each joist separately, as'has heretofore been the case when the holes were bored at an angle or out of alinement.

A further object is to provide improved clamping devices for temporarily holding the boring-machine in position between two adjacent joists or timbers.

1n the drawings, Figure 1 is a sectional side elevation of the machine, taken on the line 1 1 of Fig. 2 and looking in the direction indicated by the arrow a. Fig. 2 is a sectional end elevation with parts broken away, taken on the line 2 2 of Fig. 1 and lookingin the direction indicated by the arrow b. Fig. 3 is an inverted sectional plan viewlooking at the bottom of the machine shown in Fig. 1. Fig.

4 is a sectional plan View taken on the line 4 4 of Fig. 1 looking from below. Fig. 5 is a sectional plan View on the line 5 5 of Fig. 1 looking from below.

The machine in the present instance is provided with a rectangular box or casing 6, in which are mounted to revolve a plurality of parallel boring-bars, which latter are constructed in the form of four parallel revoluble tubes 7 and their contained feed-screws S and suitable connections. The said feedscrews are each fitted at one end with a suitable boring-bit 9 and at the opposite end with a head or enlargement 10, which is splined to its' tube 7 by means of opposite grooves 11 formed in said tube and extending almost the entire length thereof. Said feed-screws are revolved within an internally-threaded collar l2, iixed to the end of the casing by means of suitable screws or rivets, (see Fig. 1,) and said collar projects inwardly a short distance and one end of its tube 7 is mounted thereon, and there is also a bearing for the same tube in the opposite end of said casing, and longitudinal movement in one direction is prevented by a collar 13, fixed to said tube and bearing against the inner surface of said casing. Longitudinal movement of said tube in the opposite direction is prevented by contactI of its end with the end of the casing. The mounting of each tube is substantially the same as that above described, except that the head and tail ends are placed alternately, as shown in Fig. 1.

14 indicates the driving-shaft, upon the outer end of which is mounted a suitable hand-crank 15, and which shaft extends within the casing and carries a gear-wheel 16, which meshes with a combined bevel and spur wheel 17, which forms what I may term the master-wheel. Said master-wheel 17 is mounted upon a suitable stud or short shaft extending between two transverse frameplates 18 19, and said master-wheel is located midway between the upper pair of the revoluble tubes 7, and iixed upon each of said tubes is a gear-wheel 20. 1t will be seen that two of said gear-wheels 2O mesh directly with the teeth of the said masterwheel 17, and these wheels in turn mesh with wheels directly beneath them. I desire to state in this connection that any of the known methods IOC) of splining may be adopted instead of that which I 'here show for connecting the said tubes 7 to the feed-screws S, and I therefore do notlimit myself to the construction herein shown.

I will now describe the construction of the improved clamping devices for anchoring the machine between two adjacent joists.

The clamping devices in the present instance consist of opposite clamping-plates 2l, having suitable teeth or claws 22 for engaging the joists or timbers and suitable mechanism for simultaneously urging said clamping-plates outwardly when the machine is to be anchored to the joists and means for simultaneously retracting said plates in displacing the machine.

Mounted to slide in suitable bearings 23 in the top of the casing 6 is a pair of parallel toothed racks 24, and another pair of said toothed racks 24 is mounted in the same manner upon the bottom of said casing, and the outer end of one rack of each pair of racks is pivotally connected to an'adjacent clampingplate 21 by means of a perforated ear 25. Motion is imparted to said l toothed racks by means of pinions 26, which are fixed upon a transverse shaft 27, suitably mounted in the casing 6 and provided at its outer end with a handle 28. A ratchet-wheel 29 is xed upon said shaft 27 within the said casing and engaged by a pawl 30, pivoted at 3l to the casing adjacent said ratchet-wheel. The disengagement of the pawl is effected bya lug 32, carried by an additional transverse shaft 33, the outer end of which is provided with a suitable handle 34.

The operation is as follows: The machine is to be placed between two adjacent joists in which holes are to be bored and secured in position by means of the clamping-plates 2l, and their teeth 22 being forcibly urged into contact with said joists by the movement of the rack-bars 24, which is occasioned by rotating the sha'ft 27 by means of its handle 28, and when the machine has thus been secured in position the rack-bars will be locked by means of the pawl 30 engaging the ratchetwheel 29. It will be observed that all of the rack-bars are moved simultaneously, thereby imparting a uniform movement to all parts of the said clamping-plates. The machine is now ready to bore, and this may be accomplished by turning the crank 15 toward the right in Fig. l, thereby imparting motion simultaneously to all four of the tubes 7 in a i proper direction to bore with right-hand bits carried by all four of the feed-screws 8. The revoluble movement of said tubes 7 causes the feed-screws 8 also to revolve, and their threads engaging their respective fixed collars 12 causes said screws to be simultaneously fed outwardly, thereby forcing said bits tracted, thereby disengaging said clampingi plates and their teeth 22 from the timbers.

It is to be noted that I do not limit myself to the identical form of boring-'bits herein shown, as it is evident that any known form of drill, either for metal or wood, may be substituted without involving the metaphysical function commonly known as invention I claiml. Aboring-machineconstructedwithaplurality of drill-holders projecting in opposite directions, means for simultaneously revolving said drill-holders, and means for 'clamping the machine between two adjacent timbers.

2. Aboring-machineconstructed withaplurality of drill-holders, means whereby one or more of said drill-holders are simultaneously fed outwardly in opposite directions, and means for simultaneously revolving and feeding outwardly said drill-holders,substantially as specified. l

3. A boring-machine constructed with a plurality of drill-holders, means whereby one or more of said drill-holders are simultaneously fed outwardly in opposite directions, means for simultaneously revolving and feeding outwardly said drill holders, and means for clamping the machine between two adjacent timbers.

4. Aboring-machine constructed withaplurality of drill-holders, means whereby one or more of said drill-holders are simultaneously fed outwardly in opposite directions, means for simultaneously revolving and feeding outwardly said drill-holders, means for clamping the machine between -two adjacent timbers,

.and means for locking the clamping devices after the machine has been clamped in position.

5. A boring-machine constructed with aplurality of drill-holders, means whereby one or more of said drill-holders are simultaneously fed outwardly in opposite directions, means for simultaneously revolving and feeding outwardly said drill-holders, means for clamping the machine between two adjacent timbers, means for locking the clamping devices after the machine has been clamped in position, and means for releasing the locking devices.

In testimony whereof I aiiiX my signature in presence of two witnesses.

RAYMOND W. ROWLEY. Witnesses:

JOHN C. HIGDON, ALFRED A. EIcKs.

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