US1125868A - Machine for drilling wrench-bars. - Google Patents

Description

A. L. MOORE. MACHINE FOR DRILLING WRENCH BARS.

APPLICATION FILED FEB. 2, 1910. 1,125,868. Pa nted an. 19, 1915.

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ATTORNEY.

H-IE NORRIS PETERS CO PHom urHou WASHINQTON. n. C.

A. L. MOORE. MACHINE FOR DRILLING WRENCH BARS.

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WITNESSES: gag

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ATTORNEY.

THE NORRIS PETERS co..PHOTO-L1THO., WASHINGTON. D c

Patented Jan. 19, 1915.

5 SHEETS-SHEET 3.

A. L. MOORE.

MAGHINEIOR DRILLING WRENCH BARS.

APPLICATION FILED FEB. 2. 1910.

LVVENTOR, UZY'Z /QZU'L M719,

WITNESSES.- Vi%@%-w W flflzf. I

ATTORNEY.

THE NORRIS PETERS CCL, PHOTC-LITHO WASHINGTON. D. C

A. L. MOORE. MACHINE FOR DRILLING WRENCH BARS.

APPLICATION FILED PEB.2, 1910. 1, 1 25,868. Patented Jan. 19, 1915.

5 SHEETS-SHEET 4,

WITNESSES: v x

ATTORNEK A. L. MOORE.

MACHINE FOR DRILLING WRENCH BARS.

APPLICATION FILED FEB. 2. 1910.

Patented Jan. 19, 1915.

5 SHEETS-SHEET 5.

[N VENTOR, firixiarljlflaf, BY

A TTORNEY.

" 'rnn STATES PATENT OFFICE.

ARTHUR L. MOORE, F SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO MOORE DROP FORGING COMPANY, OF SPRINGFIELD, MASSACHUSETTS, A CORPORATION OF MAS- SACHUSETTS.

MACHINE FOR DRILLING WRENCH-BARS.

Specification of Letters Patent.

Patented Jan. 19, 1915.

of Hampden and State of Massachusetts,

all

have invented certain'new and useful Improvements in Machines for Drilling rench-Bars, of which the following is a full, clear, and exact description.

My invention relates to improvements in drilling machines and refers particularly to a machine for drilling openings in wrench bars, and the leading object of my invention is the provision of a machine which will 2 simultaneously drill three holes or openings in the bar of a wrench.

Another object of my invention is the provision of a machine for drilling wrench bars which will simultaneously drill one openingvertically, one horizontally, and

one at an angle or incline with reference to the vertical and horizontal openings as required and necessary, and which mechanism will be of comparatively simple construction and capable of easy control and manipulation by the operator.

To attain the desired objects, my invention consists of a machine for drilling openings in wrench bars comprising a vertically mounted drill, horizontally disposed drills, and means for simultaneously imparting vertical and horizontal movement to the set of drills and for revolving said drills in the accomplishment of the drilling of the three openings.

The invention also consists of a drilling machine embodyingnovel features of construction, combination and arrangement of parts for service substantially as disclosed herein.

I have illustrated in the accompanying drawings what I believe to be the best embodiment of my invention which I have thus far conceived, but within the scope of the claims numerous changes and modifications can be resorted to without sacrificing any of the advantages of my invention and without departing from the spirit or scope of my improvements.

In the drawings: Figure 1 represents a top plan view of my complete drilling machine; Fig. 2 represents a front elevation of the machine; Fig. 3 represents an end elevation; Fig. 4 represents a plan view of what I term the work holder or jig; Fig. 5 rep resents a side viewof the work holder or jig-taken from theright. Fig. 6 represents a rear view; Fig. 7 represents a sectional view on line 7 7 Fig. 1; Fig. 8 represents a perspective view of the wrench bar showing the vertical and horizontal or lateral openings as they appear when drilled with my machine. Figs. 9 and 10 represent respectively a sectional view and perspective view of the work holder with wrench bar in position to be drilled.

Referring by numerals to the drawings, in which similar numerals of reference designate corresponding parts in all of the views: The numeral 1 designates the frame or supporting structure of my machine which is provided with a horizontal bed or support 2, an upright or standard 3, formed with the yoke &, having the pair of shaft bearings 5 and the cross head 6 having the shaft hearing or sleeve 7, and from the cross head extends the arm 8 provided with the vertical shaft bearing 9. Mounted in the cross head 6 isthe shaft 10 carrying the pair of pulley wheels one 11 of which is fast and the other 11 being loose on such shaft, and partially around these pulleys passes the driving belt 12 leading from a suitable source of power; and from these pulleys 11 the belt passes over the pulley 13 which is splined on the spindle 1 1 so that the spindle may slide in, but be rotated by, said pulley and the shaft 10 carries at one end the sprocket 15 and is provided with the universal joint 16 to which is connected the inclined short shaft 17 carrying at its outer end the sprocket wheel 18, the hubs of the sprocket wheels being rigidly secured to the shafts 10 and 17 by means of keys or screws 19, and from this construction it will be observed that power being supplied through the driving belt to the pulleys the vertical spindle 14 and the horizontal shafts 10 and 17 are simultaneously revolved and that the universal connection 16 permits the inclined shaft 17 to accommodate itself to the rotation of the shaft 10. From the sprocket wheels 15 and 18 leads respectively the sprocket chains 15 and 18 which engage the sprocket wheels 20 and 21 mounted on the spindles 22 and 23 respectively, the spindles 22 and 23 being arranged in a horizontal plane at a right angle to the vertical spindle 14, and the horizontal spindle 23 is arranged at an incline with reference to the spindle 22; and it will be observed that the revolution of the sprockets 15 and 18 through the medium of the chains 15 and 18 imparts a revolution to the spindles and 23; and to insure the sprocket chains 15 and 18 being taut or under the proper tension at all times, I provide the pair of sprocket wheels 24 and 25 which have their hubs 26 and 27 mounted on the studs 28 and 29 secured in the upper end of the arms 30 and 31; the lower ends of which have the studs 32 and 33 mounted in the brackets 34 and 35 secured to the bed plate 36, the said bed plate resting in the drip pan 37 supported upon the horizontal bed 2 of the frame or support. From this construction it will be understood that when power is applied to the driving belt, the vertical shaft 14, the spindle 22 at a right angle thereto, and the spindle 23 at an incline to the spindle 22 are all simultaneously revolved through the medium of the sprocket wheels and chains, and also that the tension devices retain the driving chains at all times under the proper tension to insure a reliable rotation of the three spindles named.

The pulley 13 is splined on the shaft 14 so that such shaft may slide through but be rotated by said pulley; and encircling the spindle below the pulley is a sleeve 40 which is slidably guided vertically through the bearing 38 of the arm secured to the frame. The sleeve is held between collars 41 in abutment against the upper and lower ends thereof, such collars being fast to the spindle 14 and upon one side the sleeve carries a rack 43 which is in enga ement with a gear wheel 44 mounted on the shaft 48 which revolves in the bearings 49 provided at the upper end of the standards or uprights 50. And upon said shaft 48 are the vertically disposed beveled pinions 51 which mesh with the horizontally disposed bevel pinions 52 on the upper end of the pair of vertical shafts 53 mounted in the horizontal bearings 54 of the said standards or uprights 50.

To the lower ends of the pair of vertical shafts 53 are secured the pair of horizontally disposed bevel pinions 55 which mesh with the pair of pinions 56 on the short shafts or studs 57 mounted in brackets 58 secured to the bed plate of the machine. On the shafts 57 are secured the clutches 59; and upon the outer ends of the said shafts 57 are secured the gear wheels 60 which engage the rack bars 61 mounted on the sleeves 62 which are held upon the shafts 22 and 23, by the collars 64*, 66 so that endwise movements of the sleeves cause corresponding endwise movements to the shafts 22 and 23. The shafts are revolubly and slidably mounted in the uprights 64 secured to the bed 36 and the aforementioned sleeves 62 have sliding movements in the uprights 65 which are also supported by the bed of the machine. The rack bars 61 serve as keys to prevent the rotation of the sleeves 62 in the ways therefor through the uprights 65. The shafts 22 and 23 are splined through, and endwise movable relatively to the sprocket wheels 20 and 21. Each of the spindles 22 and 23 carries a chuck 66 in which is mounted a drill 67, there thus being three drills, one vertical and two horizontal, the latter two drills being at an angle to each other, as best seen in Fig. 1; and the inner or collar portion 66 of the drill spindles at all times abuts against the inner portion of the sliding sleeves. And upon the shaft 48 is secured a sleeve 68 pro vided with a hand operating lever 69; and it will be understood that upon the depres sion of the lever 69, the shaft 48 is rotated, and simultaneously the drills 67 will be moved one vertically, and two thereof hori- Zontally in their inclinations to each other in such a manner as to form the vertical opening 70, the horizontal opening 71, and horizontal opening 72 inclined to opening 70 in the wrench bar 73, as most clearly seen in Fig. 8.

In the drawings I have shown the shaft 23 at a certain angle, but it will be understood that this angle may be changed as circumstances dictate without involving the change of the construction of my machine, but by simply placing the parts at a different angle.

In order to cause the spindles 22 and 23 to revolve with little friction and to insure a long wearing of the parts, I provide the ball bearing 79 between the sleeves and the collars adjacent thereto which are affixed on the spindles.

From the foregoing description taken in connection with the drawings, the operation of my machine will be readily understood; and assuming the wrench bar to be in position upon the work holder as shown in Fig. 4 and the three shafts carrying the drills revolving simultaneously, by moving ,the hand lever downwardly the sleeves are moved toward the wrench bar simultaneously, and the drills simultaneously produce the openings 70, 71. and 72, and upon the raising of the hand lever the parts are returned to normal position, permitting the insertion of a new wrench bar and repeating the operation; and in this manner the machine in a rapid, efficient and practical manner produces the openings in the wrench bar as clearly seen in Fig. 8.

The wrench bar 73 after being operated upon as before stated, has the opening 71 in the shank of the bar on one side, the opening 72 upon one side of the upper part below the j aw and at an incline, and the vertical through opening 70 on the opposite side of the bar and below the jaw; and the bar adjacent the opening 70 is formed with recessed portions 70 on each side, the general outline of the shouldered portionbeing that of a guide 176, whichangled portions and the supports are provided with hubs 7 6 of the same shape and fitting snugly in the recessed portions 70* of the wrench bar; and when the bar is in place. to be drilled it fits in the jig as shown inFigs. 9 and 10 with the head or Jjaw portion retained by the guide and hubs and one side of the bar rests against the stop abutment 77 of the bed of the ig; and this permits the easy insertion and removal of 1 tie barbut places it in the best possible position to be drilled. andprevents accidental movement or displacement.

I claim 1. In a machine of the character described, the combination with a frame, a shaft mounted in said frame and consisting of two mem bers, arranged horizontally and the one member being at an angle to the other, a.

universal joint between said members, a pair of pulleys on one member of said shaft, another pulley revoluble in a horizontal plane, a vertical spindle splined and slidable through the last named pulley, and carrying a drill, a horizontally disposed spindle, and a drill. carried by said spindle, another spindle arranged in a horizontal plane and at an incline with reference to the first named horizontal spindle, a drill-carried by said spindle, means for imparting a sliding movement to the said spindles, and means for simultaneously revolving the said spindles.

2. I In a machine of the character described, the combination of a frame, a driving shaft consisting of two parts having a universal joint connection, a sprocket wheel mounted on the ends of saidparts or members 'of the shaft, two horizontal drill spindles arranged angularly to each other, sprocket wheels 011 said horizontal drill spindles, and sprocket wheels on the universally jointed two part shaft, sprocket chains connecting pairs of the sprocket wheels, a vertical drill spindle,

means for rotatingboth the vertical drill spindle, and universally jointed horizontal shaft, and means for s multaneously long1- tudinally advancing and retiring all. of the drill spindles.

3. In a machine. of the character described, the combination of the frame provided with a. horizontal bracket-like support,.a yoke extended oppositely relativelyto the said support, and the cross head, having axlally horizontal journal bearings therein, the twopart shaft mounted in the cross head and yoke and carrying sprocket wheels at the outer ends thereof, pulleys mounted on one part of said shaft, a vertical spindle journaled through said bracket-like support, a pulley on said spindle, a belt passing over the said pulleys for revolving the two parts of said shaft, means for raising and lowering said vertical drill spindle, a pair of horizontal drill spindles arranged on lines angular to each other, mounted for endwise movements, sprocket wheels spline engaged on said horizontal drill spindles, constrained againstaxial movements, and through which the horizontal drill spindles are endwise movable, sprocket chains in engagement around the first named sprocket wheels, and the drill spindle sprocket wheels, means operated by the raisin and lowering means for the vertical spind e simultaneously advancing and retiring thehorizontal spindle, drills carried by said spindles, and a holder for the work, in relation to which said ably spline engaged, a pair of endwise movable drill spindles arranged in a horizontal plane below said vertical drill spindle, a horizontal shaft having a pair of pulleys thereon, a driving-belt having engagements around the aforenamed vertical spindle pulleys and around said horizontal shaft pulley, driving connections between said horizontal shaft and said horizontal drill spindles and means for simultaneously endwise advancing and retiring the vertical and the two horizontal drill spindles.

5. In a machine of the character described, in conbination, a work support, a vertical drill spindle, a frame supported arm through which the vertical spindle is guided, a pulley through which said spindle is slidably engaged, a pair of endwisemovable drill spindles arranged in a horizontal plane below said vertical drill spindle, one of such spindles being arranged longitudinally of j the machine, and the other arranged incliningly thereto, a horizontal shaft having a pair of pulleys thereon, a driving belt having engagements around the aforenamed vertical spindle pulley and around said horizontal shaft pulleys, driving connections between said horizontal shaft and said horizontal drill spindles and means for simultaneously endwise advancing and retiring the vertical and the two horizontal drill spindles.

6. In a machine of the character described, in combination, a vertical and a horizontal drill spindle, each having a sleeve through and relatively to which the spindle is rotative but constrained against movement endwise relatively to the spindle and each sleeve having rack teeth thereon. and bearing and,

guiding means through which said sleeves are slidable, a rock shaft having an operating handle and a pinion in mesh with the rack teeth of the vertical spindle sleeve, a horizontal shaft having a pinion in mesh with the rack teeth of the horizontal spindle sleeve, a vertical shaft extending between said rock shaft and said horizontal pinion provided shaft, and bevel-gear-connected at its upper and lower ends with said shafts.

7. In a machine of the character described, in. combination, a vertical drill spindle, a horizontal drill spindle arranged longitudinally of the machine, and another-horizontal drill spindle arranged incliningly tothe first named horizontal spindle, each drill spindle having a'loosely encircling sleeve constrained against endwise movement relatively to its spindle, and each sleeve having rack teeth thereon, and bearing and guiding means through which said sleeves are slidable, a horizontal shaft, mounted in an upper part of the machine, comprising a Copies of this patent may be obtained for five cents each, by addressing the- Commissioner of Patents,

shaft section which is parallel with the 101igitudinally arranged horizontal drill spindle, and a second shaft section, universal through which the horizontal drill spindles 40 are endwise movable, chains connecting the sprocket-wheels on the sectionally formed shaft and the horizontal drill spindle sprocket wheels, a'rock shaft 'having'an operating handle and a pinion in mesh with the rack teeth of the vertical spindle sleeve,

pinions in mesh with the rack teeth of'the horizontal spindle sleeves, and driving connections between SalCljliOCkSl1 fllEt and the last named pinions.

Signed by ine at Springfield, Mass, in

presence of two subscribing witnesses.

Witnesses:

G. R. DRISCOLL,

VVM. S. BELLoWs.

Washington, D. G.

ARTHUR L. Moons;

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