US122402A

US122402A - Improvement in boring-machines

Info

Publication number: US122402A
Authority: US
Publication date: 1872-01-02
Anticipated expiration: 1889-01-02

Description

TATES IMPROVEMENT IN BORING-MACHINES.

" Specification forming part of Letters Patent No. 122,402, dated January 2;1872.

To all whom it may concern! I Be it known that I, ZACARIAH C. PHILLIPS, 0f the'city and county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in BoringMachines and I 'do hereby declare that the following isa full, clear, and exact description thereoi', reference being had to the accompanying drawing and to the letters of reference marked thereon.

The nature of my invention consists in a hol- Vlow mandrel provided with an adjustable oompound crank, a gauge, and screw-threads, and fitted into a pivoted and adjustable bearing, provided with a trigger which causes the mandrel and its augerto become inoperative by the gauge coming in Contact with the trigger, the whole being adapted to Wood-boring augers and bits7 To enable others skilled in the art to make and use my invention, I will proceed to describe more fully its construction and operation.

In the accompanying drawing which forms part of my specilication, Figure rl is a side elevation of my improvement in boring-machine. Fig. 2 is a verticall section at line y of Fig. 1, and represents the manner of pivoting the bearing to the frame and seat for the operator. Fig. 3 is an enlarged View, in section7 ofthe mandrel bearing and its trigger.

Inthe accompanying drawing, A represents the frameor seat for the operator. B represents two curved and slotted arms,vwhich are used for the purpose of holding the bearing C the upper end ofthe mandrel D is attached a compound crank, consisting of handles n o and levers p r s t, which levers may be adjustedthrough the medium of set-screws a, and lengthened, as indicated, by the dotted lines w. The desired angle is given to the bearing C and mandrel D through the medium ofthe slots o in the curved arms B andthe set-screws x. The auger is held in position in the mandrel D by a pin or setscrew.' The frame A is constructed of wood, and the bea-ring C, mandrel D, trigger-collar, and arms B of suitable metal.

- The operation of my improved boring-machine is as follows Having the parts adjusted and arranged as shown in Figs. l and 2, the operator turn s or revolves the mandrel D, which will revolve the auger, and the screw on the end of it will give it the necessary feed. The depth of the boring being gauged by the collar l, as soon as it comes in contact with the point l of the part f. of the trigger the point 2 will be thrown up and the point 3 of part e will be thrown into `the space between the screwthreads 7c by spring h, and thereby cause the mandrel `D and auger attachedto it to travel upward. The parts are then reset for boring a second hole.

Having thus described the construction and operation of my improved boring-machine, what I claim as being of my invention, isrIhe pivoted bearing G provided with atrigger, as shown, and used in combination with the collar] and hollow mandrel Dprovided with a compound crank, all constructed and operating substantially as herein described, and for the purpose set forth.

y Z. C. PHILLIPS.

Witnesses:

JAMES J. J oHNs'roN, JN0. D. PATTEN. (173)