US113815A - Improvement in drilling-machines - Google Patents
Improvement in drilling-machines Download PDFInfo
- Publication number
- US113815A US113815A US113815DA US113815A US 113815 A US113815 A US 113815A US 113815D A US113815D A US 113815DA US 113815 A US113815 A US 113815A
- Authority
- US
- United States
- Prior art keywords
- lever
- cam
- drilling
- machines
- improvement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 241000600039 Chromis punctipinnis Species 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/32—Feeding working-spindles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/17—Rotary driven device adjustable during operation relative to its supporting structure
- Y10T74/173—Screw and nut adjusting means
Definitions
- Figure 2 represents an end viewwith the crankhead removed.
- Figures 3, 4, and 5 represent the series of interchangeable cams.
- the part marked A represents the frame of the drill, B the feed-wheel, C the feed-screw, D the drilling-tool, and E the crank, all of which parts are'constrncted and arranged in the ordinary manner, and therefore need not be more fully described.
- the feed-lever F may also have its upper part constructed in the ordinary form where -it is provided with the pawl J, but the lower end of the lever F is made shorter than it is in the ordinary drill, and is pivoted or fulcrumed in a bearing-piece G, which latter is rigidly secured to the end of the slide-bar H.
- the bearing-piece G is extended upward at the inner side of the lever F, and the shaft or spindle I passes through its upper end.
- a series of holes, a is formed through the bearingpieee G and lever F, in which to arrange the fulcrumpin K; and by inserting said pin in the different holes a, a greater or lesser motion is imparted to the upper end of thefeed-lever Rand, Consequently, the amount of feed is thereby varied.
- the slide-bar H - is formed square, as indicated, and, being fitted to a hole of similar form, it is held from turning or rolling, while thev bar is at the same time allowed to slide freely back and forth longitudinally.
- the lever F is operated by a circular cam, L, arranged upon the shaft I within the open center of the lever F. y
- a pin, v11, in the side of the cam lits into an opening in the ilange (l, and thereby keeps the cam in its proper relative position.
- the cam L can be exchanged for one of more or less ecoentricity, a seriesot them being provided, as shown by iigs. 3, 4, and 5.
- the cams are to be changed when it is desirable to vary the feed more than can be done by moving the pin K; for instance, the cam L permits the pawl J totake two or three teeth ofthe ratchet, cam L1 three or four teeth, cam L2 four or six teeth.
- the feed can be regulated in a very perfect and satisfactory manner.
- the openings in the cams are of such size that they fit closely on the ⁇ shaft I, so that there is no loose: ness or rattling of the parts when the machine is in motion.
Description
intim atzt GEORGE O. TAFT, OF WORCESTER, MASSACHUSETTS.
Letters Patent No. 113,815, dated April 18, 1871.
IMPROVEMENT IN DRlLLING-MACHINES.
The Schedule referred to in these Letters Patent and making part of the same.
To all whom tt fina/y concern:
Be it known that I, GEORGE 0. TAFT, of lthe city and county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Drills; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing which forms a part of this specification, in which- Figure l represents a side lview of so much of a blacksmiths drill as is necessary to illustrate my iuvention.
Figure 2 represents an end viewwith the crankhead removed.
Figures 3, 4, and 5 represent the series of interchangeable cams. v
The nature of my invention consists in certain special improvements in hand-drills, as hereafter fully described.
In the drawing- The part marked A represents the frame of the drill, B the feed-wheel, C the feed-screw, D the drilling-tool, and E the crank, all of which parts are'constrncted and arranged in the ordinary manner, and therefore need not be more fully described.
The feed-lever F may also have its upper part constructed in the ordinary form where -it is provided with the pawl J, but the lower end of the lever F is made shorter than it is in the ordinary drill, and is pivoted or fulcrumed in a bearing-piece G, which latter is rigidly secured to the end of the slide-bar H.
The bearing-piece G is extended upward at the inner side of the lever F, and the shaft or spindle I passes through its upper end.
A series of holes, a, is formed through the bearingpieee G and lever F, in which to arrange the fulcrumpin K; and by inserting said pin in the different holes a, a greater or lesser motion is imparted to the upper end of thefeed-lever Rand, Consequently, the amount of feed is thereby varied.
ln the present instance but two holes, a, are represented, but a greater number may be used when desired.
The slide-bar H -is formed square, as indicated, and, being fitted to a hole of similar form, it is held from turning or rolling, while thev bar is at the same time allowed to slide freely back and forth longitudinally.
The lever F is operated by a circular cam, L, arranged upon the shaft I within the open center of the lever F. y
A pin, v11, in the side of the cam lits into an opening in the ilange (l, and thereby keeps the cam in its proper relative position.
The cam L can be exchanged for one of more or less ecoentricity, a seriesot them being provided, as shown by iigs. 3, 4, and 5.
The cams are to be changed when it is desirable to vary the feed more than can be done by moving the pin K; for instance, the cam L permits the pawl J totake two or three teeth ofthe ratchet, cam L1 three or four teeth, cam L2 four or six teeth. Thus it ywill be seen that by means of the movable pivot-pin K and the interchangeable cams L Ll L2 the feed can be regulated in a very perfect and satisfactory manner.
The openings in the cams are of such size that they fit closely on the` shaft I, so that there is no loose: ness or rattling of the parts when the machine is in motion.
Having described my improvedsdrill,
What I claim therein as new and of my invention, and desire to secure by Letters Patent, is-
The combination, as herein described, of the shaft I, slide-bar H, bearing-piece G, adjustable fulcruinpin K, the lever F and its operating-cam, for the purposes set forth. V
GEO. C. TAFT. Witnesses:
A. E. PEIBGE, Gno. H. MILLER,
Publications (1)
Publication Number | Publication Date |
---|---|
US113815A true US113815A (en) | 1871-04-18 |
Family
ID=2183279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US113815D Expired - Lifetime US113815A (en) | Improvement in drilling-machines |
Country Status (1)
Country | Link |
---|---|
US (1) | US113815A (en) |
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0
- US US113815D patent/US113815A/en not_active Expired - Lifetime
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