US1046496A

US1046496A - Adjustable taper-boring device.

Info

Publication number: US1046496A
Application number: US65979811A
Authority: US
Inventors: William Jhon Sanderson
Original assignee: AUGUST L H HINRICHSEN; CHARLES W HADCOCK
Current assignee: AUGUST L H HINRICHSEN; CHARLES W HADCOCK
Priority date: 1911-11-11
Filing date: 1911-11-11
Publication date: 1912-12-10
Anticipated expiration: 1929-12-10

Description

J. SANDERSON. ADJUSTABLE TAPER BORING DEVICE.

APPLICATION FILED NOV. 11, 1911.

Patented Dec. 10, 1912.

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W. J. SANDERSON.

ADJUSTABLE PAPER BORING DEVICE.

APPLICATION FILED 11017.11, 1911. 1,046,496. Patented Dec. 10, 1912.

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T0 AUGUST L. H. HINRICI-ISEN BIRMINGHAM, ALABAMA.

AND ONE-THIRD 10 CHARLES W. HADCOCK, 0F

ADJUSTABLE 'IAPER-BORING DEVICE.

Specification of Letters Patent.

Patented Dec. 10, 1912.

Application filed November 11, 1911. Serial No. 659,798.

To all whom it may concern:

Be it known that I, WILLIAM J. SANDER- SON, a citizen of the United States, residing at Birmingham, in the county of Jefferson and State of Alabama, have invented certain new and useful Improvements in Adjustable Taper-Boring Devices, of which the following is a specification.

The present invention relates to a boring device adapted to be employed in forming cylindrical openings or for cutting tapered bores of different shapes.

An important object of my invention is to provide means of the above mentioned character which may be readily adjusted for cutting difierent shapes of tapered bores.

A further object of this invention is to provide an adjustable taper boring device having novel means to effect the longitudinal travel of the tool or cutter.

A further object of the invention is to provide a device of the above mentioned character, which is simple in construction, cheap'to manufacture, and easy to operate.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same, Figure 1 is a side elevation of the device, showing it applied to parts of a drill press, Fig. 2 is an edge view of the same, Fig. 3 is an enlarged longitudinal sectional view, taken through the movable carriage and relatively stationary track, associated elements being shown in elevation, Fig. 4 is a horizontal sectional view taken on line 4 -4 of Fig. 1, Fig. 5 is a similar view taken on line 55 of Fig. 1, Fig. 6 is a similar view taken on line 6-6 of Fig. 1, and, Fig. 7 is a similar view taken on line 7-7 of Fig. 1.

In the drawings wherein is illustrated a preferred embodiment of my invention, the numeral 1 designates the upper frame of a drill press, upon which is mounted a bearing 2, for receiving a rotatable shaft 3. This shaft is provided at its lower end with a socket 4:, preferably square in cross-section, for receiving the upper end of a spindle 5. The lower end of this spindle is journaled in a fixed bearing 6. Although I have shown my device as applied to a drill press,

'7 and carriage 7 I do not wish to restrict myself to such practice alone, as the same can be advantageously used in connection with a lathe, boring mill, radial drill, or any machine or appliance having a revolving element.

The numeral 7 (see Figs. 1 and 8) designates a relatively stationary track, which is substantially trapezoidal in horizontal crosssection, as shown. This track is provided upon one side thereof with curved arms or segments 8, rigidly connected therewith and disposed upon opposite sides of the spindle or rotatable element 5, as more clearly shown in Fig. 6. These curved arms 8 are provided with longitudinal slots 9, for receiving a bolt 10 carried by the spindle 5. This bolt carries a nut 11, for rigidly clamping the arms 8 to the spindle 5 in adjustment at different positions with relation to said spindle. One of the arms 8 is provided upon its outer surface with a scale 12, cooperating with a pointer 13, which is fixedly secured to the spindle 5.

Pivotally mounted upon the spindle 5 below the track 7 is a substantially U-shaped tool-holder guide or rest 14, more clearly shown in Figs. 1 and 7. This tool-holder guide is pivotally connected with the spindle 5 by a bolt 15, as shown. The guide 14: is provided through its upper portions with curved slots 16, for receiving the ends of a clamping bolt 17, carried by the spindle 5, as shown. The guide 1% is provided with a longitudinal slot or recess 18 for receiving the lower portion of a longitudinally movable tool-holder 19. This tool-holder 19 is provided at its lower end with a transverse opening for receiving a tool or cutter 20, held in place by a clamping bolt 21, as shown. The intermediate portion of the tool-holder 19 slidably engages the lower portion of the track 7 and the upper portion of said toolholder is off-set, as shown. The upper olfset portion of the tool-holder 19 is rigidly connected with a carriage 7 by clamps 22, held in place by bolts 23 engaging the carriage, as shown.

The carriage 7 is approximately U-shaped in horizontal cross-section, affording an opening 24, for receiving a feed screw 25 and the track 7. Interposed between the track is a gib or strip 7 held in place by adjusting screws 7 The lower end of this feed screw operates within a screwthreaded opening 26 formed through the upper end of the track 7. Disposed below the screwthreaded opening 26 is a counter-bore 27 formed through the track 7, as shown. The upper end of the feed screw 25 is provided with a smooth extension 28, rotatably mounted in an opening 29 formed through the upper portion of the carriage 7. The feed screw 25 is provided below and adjacent the extension 28 with an annular flange 30, as shown. The extension 28 continues in a reduced portion 31, upon which is mounted a feed drive or star wheel 32. This feed drive cannot turn on the portion 31 and when rotated will effect a rotation of the feed screw. Clamping nuts 33 are preferably carried by .the reduced portion 31 above and below the feed drive 32. The feed drive comprises arms 34. Connected with the frame 1 is a fixed teed drive arm 35, the lower end portion of which is disposed in the path of travel of the arm 34 of the feed drive. The arm 35 is preferably provided witha longitudinal slot 36 for receiving clamping bolts 37 carried by the frame 1.

The operation of the device is as follows :VVhen the tool-holder 19 is in the vertical position, as shown in Fig. 1, the device may be employed to cut cylindrical bores. When it is desired to cut tapered bores, the nut 11 is unscrewed to permit of angular adjustment of the track 7 with respect to the spindle 5, the extent of the angle of inclination of the track being indicated by the pointer 13 on the scale 12. The track 7 is now locked to the spindle by screwing up the nut 11. The guide 14 has previously been unclamped from the spindle 5 by proper manipulation of the clamping bolt 17, whereby said guide will be free to swing to occupy an angular position corresponding to that of the tool-holder 19. The guide 14 is now locked to the spindle 5 by proper manipulation of the clamping bolt 17 The feed drive arm 35 has its lower portion disposed in the path of travel of the arms 34 of the feed drive and when the track 7 is angularly adjusted, as above described, a suitable feed drive arm 35 is provided so that its lower portion will be disposed in the path of travel of said arms 34, as indicated in dotted lines in Fig. 1. As the spindle 5 revolves it carries all the elements of the device withit and the tool or cutter 20 will accordingly out the desired bore. When the arms 34 engage the stationary arm 35 a step by step turning movement is imparted to the feed screw 25, causing the carriage 7 to travel longitudinally and also the tool holder 19.

I wish it understood that the form of my invention herewith shown and described 'is to be taken as a preferred example of the same and that certain changes in the shape, size, and arrangement of parts may beresorted to without departing from the spirit of the invention as indicated by the scope of the subjoined claims.

Having thus described my invention, I claim 1. The combination with a rotatable element, of a track, a segment connected there with and provided with a scale, clamping means carried by the rotatable element to engage said segment, a pointer carried by the rotatable element to cooperate with said scale, a carriage movably mounted onthe track, a tool holder connected with the carriage, a tool holder guide angularly adjustably connected with the rotatable element to engage the lower portion of the tool holder, and means 'to move the carriage longitudinally during the rotation of said rotatable element.

2. The combination with a. rotatable element, of a track adapted to be disposed at diflierent angular positions with relation to said rotatable element, an arm connected with said track and provided with a curved longitudinal slot, a clamping element carried by said rotatableelement and disposed in the Y longitudinal slot, a tool holder, a carriage longitudinally movably mounted on the track and connected with the tool holder, and means to eflect the longitudinal travel of said carriage including a feed screw and star-wheel.

3. The combination with a rotatable element, of a track adapted to be disposed at different angular positions with relation to the rotatable element, suitable connecting means between the track and rotatable element whereby the former may be so angularly adjusted, a carriage longitudinally movably mounted upon the track, a feed screw extending longitudinally of the track and carriage to effect the travel of said carriage, a starswheel mounted upon the free end portion of the feed screw and adapted to be bodily moved with such feed screw when the carriage and track are moved to a desired angular position, and an element disposed in the path of travel of the starwheel. 7

4. The combination with a rotatable element, of a track adapted to be disposed at different angular positions with relation to the rotatable element, adjustable means connecting said track and rotatable element, a carriage movably mounted on the track, means to move the carriage, a tool-holder connected with the carriage, and an angu larly adjustable guide element connected with the rotatable element and engaging the tool holder.

5. The combination with a rotatable element, of a track, a segment provided with a scale and connected therewith, a clamping device carried by the rotatable element and engaging the segment, a carriage mounted on the track, means to move the carriage and is prevented from having any percepti- 15 longitudinally, and a tool-holder connected ble longitudinal movement with relation with the carriage. thereto, said feed screw having its lower 6. The combination with a rotatable eleend disposed within the screw-threaded ment, of a track adapted to be bodily moved axial opening of the track, a star-wheel conwith relation to the rotatable element for nected with the upper portion of the feed 20 assuming difierent angular positions with screw, and an element disposed in the path relation thereto, suitable connecting means of travel of the star-wheel.

between the track and rotatable element, In testimony whereof I afliX my signature said track being provided with a screwin presence of two witnesses.

threaded axial opening, a carriage mounted WILLIAM J HON SANDERSON. upon the track to travel longitudinally Witnesses:

thereof, a feed screw connected with the car- R. W. VAUGHAN,

riage so that said feed screw is free to turn GEO. S. LEE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.