USRE7819E - Improvement in metal-boring machines - Google Patents

Description

J. SIM P S 0 N. Assignor of 0ne-half Interest to Dick & Church.

METAL-BORING MACHINES.

No. 7,819. Reissued July 31,1877.

1| I I I fllllllVIllllilllllllIIIIIIIIIIIIIIllllllllllllllll'llllllllllllfll ,waq l fid ATTORN EYS To all whom it may concern:

, a machine embodying my invention; Fig. 2,

.chuck or mandrel h.

UNITED. STATES PATENT OFFICE.

JOHN SIMPSON, OF MEADVILL-E, PENNSYLVANIA, ASSIGJOR OF ONE-HALF INTEREST TO Dbl/K & CHURCH, OF SAME PLACE.

IMPROVEMENT IN METAL-BORING MACHINES.

Specification forming part of Letters Patent No. 124,091, dated February 27, 1872; Reissue No. 7,8 l9, dated I July 31, 1877; application lilcrtM-ay 1S), 1877.

Be it known that 1, JOHN SIMPSON, of Meadville, in the county ofCrawford and State of Pennsylvania, have invented a certain new and useful improvement in Boring h'iathines for Making Workingllyliriders or hVorhing- Barrels for Pumps, Oil-Wells, Steam-Engines,

850., and the following is a full, clear, and ex act description of the same, reference being had to the accompanying drawings, which make a part ofthis specification.

My invention relates more particularly to n vertical drill, so constructed that the drilling shall be perfectly true and cylindrical. In the drawing, Figure l is a frontview of it side view of the same; Fig. 3, a. section on the line a: w, showing parts in elevation.

A isa vertical frame, which supports the working part of the machine. It is made of metal of proper form and proportions to he sufliciently strong and durable. B is a vertically-sliding bed which carries the drill (.3. The bed B projects backward, and bears u nut through which an upright screw-shaft, 8, passes, this screw-shaft B being the shaft of it gear-wheel, B, at its base, and by which it is revolved. The revolution of the screw-shaft B causes the bed B to slide up or down, thereby feeding the drillG forward toits work.

D is the device thatis being drilled or bored, as, for instance, a working cylinder or barrel for pump, for oil-well, or steam-engine, 850. Its lower end rests upon or within a suitable support, E, and is there properly centered for the drill 0. its upper end is secured by the in the shaft of the manurei F is n bevel-gear whet-l, G, and a spur-gear, g. The bevel-gear G meshes with the bevel-pinion ti on the pulley-shaft G The spur-gear g meshes with a pinion, g,'-on the shaft 9 which, in turn, is connected with bevel-gears to the pulley-shaft 9 g is a set of belt-pulleys corresponding with a reverse set of pulleys, B The shaft of the pull ys B connects by bevel-gears with the shaft B", which is provided at the bottom with :1 pin ion, B nieshing with the spnngear B, which revolves the screw-shaft B. b is a nut attached to the sliding bed 8, and which may be thrown in or out of gear with the screwshaft 15 by means of the lever b. I is the drivcpulh-y, and operates the gangs of variable pulleys l P.

The operation of the device is as follows: The article 1) to be bored is placed in proper position on the end of the drill at the support E. Its upperend then chucked \viththe mandrel F. and communicated through the pulley 1 to the pulley I; This operates the shaft Gr and pinion G which, by meshing into the bevelgear G, causes the'mandrel F and article I) to revolve about its axis. The S])lll-g0&l' g puts in motion the shaft g and pulleys g. The bt-lt leading from the pulleys to the pulleys B causes the shaft B to revolve, which in turn gives motion to the vertical feed-screw B. The bed, however, does not move upward until the not b has been thrown into gear with the screw-shaft by means of the lever b When this is done, however, the bed B moves upward and feeds the drill U into article D.

It will be observed that the drill C does not The etfect is that the drill will move forward in a perfectly true direction, neither varying one side nor the other, and will bore out a true cylinder.

ln machines that are not vertical the shovings that are removed by the drill cannot fail by gravity out of the barrel or chamber, but become packed about the drill so as to impede its progress, and also serve to wedge it away from :1 true line of direction.

in my drill the shavings or liorings drop away usloosoned, and it is therefore capable of doing faster and better work. i

By the adjustment ofthe bcltnpon the vari able pulleys l' l the innchincnlny be tnndcto operate slower or faster with the some speed of the mwer-shai't. So, also, by ad jnstingthc belt upon the variable pulleys y. and 1%", the feed sci-ow ll may be revolved at u. greater or loss speed, and thereby feed the cylinder to the work faster or slower, as maybe desired. The revolution of the article 1), that is being bored, also serves to effect a perfectly true cylindrical boring.

K is a rack attached to the face of the ma- Power is applied to the pulleyl,

revolve, but the article D, itself, revolvcs.,

, located above the drill, and constructed to support the article to be bored, and feeding to revolve about its vertical axis, in combinachine. L is a pinion meshing therewith, and I L a hand-wheclon the shaft otthe pinion,b v l means of which, when the nutbisdisongngcd, the drill may be fed upward or withdrawn by hand at will.

What'I claim is- 1. A boring-machine for making working cylinders or barrels for pumps, oil-wells, steam engines, &c., consisting of a vertical drill, in com bination with a vertical chuck and. mandrel,

mechanism for feeding the drill upward, sulr stautially as and for'thc purposes described.

2. In a boringqnachine for making Working cylinders or barrels for pumps, oil wells, steam-engines, &c., a vertical drill and a vcrtical chuck locatcdabove the drill for sup-- porting the article to be bored and causing it tion with mechanism for feeding the drill up ward, substantially as and for the purposes described.

3. In a boring-machine for making working cylinders or barrels for pumps, oil wells, steam-engines, 850., a vertical non-revolving drill, together with a vertical chuck'or mandrel located above the drilhand constructed to support and revolve the article to be bored, in combination with mechanism for feeding the said drill upward, substantially as and for the purposes describcd. i

4. In a boring-machine for making working i cylinders or barrels for. pumps, oil-wells,

steam-engines, 8:11., the vertical drill U, support ii, and fecal screw or shaft B, in combination with the vertical revolving chuck or mandrel F, and variable feed devices B with intermediateconnections, ,whereby t e rapidity of the drill-feed may be varied, as desired, with respect to the rapa'dity of revolution of the chuck or mandrel, substantially as and for the purposes described.

5. in a boring-machine, the combination, with a vertical chuck or maatlrellccuted above the drill, and constructed to support and revolve thearticle to be bored, a verti' (rally-adjustable drill-support, and non revolving drill, of the feed-screw or shaft B, adjustable not b, and deviie b, for engaging or disengaging the out at pleasure, substantially as described.

6. In a boring-machine, the combination, with a vertical chuck or mandrel located above the drill, and constructed to support and revolve the article to be bored, 8. vertically-adjustable drill-support, and non-revclw ing drill, of the stationary -ack K, pinion K, and hand wheel L, said piniouand handwheel secured to a shaft journaled in bearings attached to the drillsupport, subs antially as described.

JOHN SIMPSON. Witnesses II. Rossrreu, W. 0. Toms.

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