US167988A - Improvement in machines for cutting wood-screws - Google Patents
Improvement in machines for cutting wood-screws Download PDFInfo
- Publication number
- US167988A US167988A US167988DA US167988A US 167988 A US167988 A US 167988A US 167988D A US167988D A US 167988DA US 167988 A US167988 A US 167988A
- Authority
- US
- United States
- Prior art keywords
- die
- screws
- machines
- improvement
- screw
- 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
- 239000007787 solid Substances 0.000 description 2
- 238000012550 audit Methods 0.000 description 1
- 230000013707 sensory perception of sound Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
- F16B5/0275—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the screw-threaded element having at least two axially separated threaded portions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/02—Thread cutting; Automatic machines specially designed therefor on an external or internal cylindrical or conical surface, e.g. on recesses
- B23G1/04—Machines with one working-spindle
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- 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
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
- Y10T408/551—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support with means actuated by work to release Tool from fixed position in Tool support
- Y10T408/552—Adapted to engage work at tool-axis
Definitions
- I d (0: I l M N-PEI'ERB, FHOTD-LITHOGRAFHER. WASHINGTON. D, C.
- Figure l is a perspective view, showing the screw-cutting dies in position.
- Fig. 2 is an end view.
- Fig. 3 is a side view.
- Fig. 4 is a detached view of one of the dies, showing the outtingknife.
- the object of our invention is to remove the screw at once after it has been out, so as to save time, and we save half the time consumed by a machine in which is used the solid die.
- Our invention is designed for use or connection with a lathe, but it may be detached therefrom and used'separately.
- Our invention consists in a die divided into two parts, and which may be used either separately or together.
- AA represent the common frame-work of a screw-cutting machine.
- the ring B, cutting-tool O, and its adjustable tool-bed D are also common features in this class of machines.
- the first feature of our invention is the half-die F, which holds the cutter G. This the is pivoted at a to the frame A, and its upper part constitutes a handle, F, for setting the die and cutter in position. When these are not in use they are held up out of position by means of a spring, I), and its tension is so strong that it will instantly throw the die up out of place against a stop-pin, 0, when the screw-thread has been cut the desired length, at which time the screw, being fed forward, presses upon the gage, which with its intermediate mechanism instantly releases the die.
- H represents the gage, which, by means of a set-screw, may be set on the gage-rod B, so that a thread may be cut of any length.
- This rod lies loosely in hearings on the sides of the framework A A.
- a lever, I pivoted at its center to a fulcrum, cl, on the frame A.
- a pin, m On the opposite end of the lever is a pin, m, which, by means of a spring, a, is thrown inward, so as to enter a hole in the die-handle, whenever the handle is pulled down ward.
- Fig. 1 we have shown adouble die. Both dies may be pivoted to the frame on the same fulcrum, and at pleasure either one may be removed from contact with the screw but the lower die is not an essential feature of our invention.
- a die, F in combination with the cutter G, substantially as and for the purpose set forth.
Description
G. W. CHAMBERLIN 81 S. G. CUSHING.
Machinefor Cutting Wood Screws.
No [67 988 PatentdSept.21,l875.
Vvi'incsses Invenrtor:
I d (0: I l M N-PEI'ERB, FHOTD-LITHOGRAFHER. WASHINGTON. D, C.
NITED STATES PATENT OFFICE.
GEORGE W. GHAMBERLIN AND SEW'ELL G. GUSHING, OF FITOHBURG, MASSACHUSETTS; SAID OHAMBERLIN ASSIGNOR TO SAID CUSHING.
IMPROVEMENT IN MACHlNES FOR cuT'rme WOOD-SCREWS.
Specification forming part of Letters Patent No. 167,988, dated September 21, 1875 application filed September 4, 1875.
To all whom "it may concern:
Be it known that we, GEORGE W. CHAM- BERLIN and SEWELL G. CUSHING, both of Fitchburg, Massachusetts, have invented certain new and useful Improvements in Machines for Cutting Wood-Screws, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making a part of this specification, in which Figure l is a perspective view, showing the screw-cutting dies in position. Fig. 2 is an end view. Fig. 3 is a side view. Fig. 4 is a detached view of one of the dies, showing the outtingknife.
Where screws are cut with a solid die, the screw when finished has to be turned backward until it clears the die before it can be removed from the machine.
Now, the object of our invention is to remove the screw at once after it has been out, so as to save time, and we save half the time consumed by a machine in which is used the solid die.
Our invention is designed for use or connection with a lathe, but it may be detached therefrom and used'separately.
Our invention consists in a die divided into two parts, and which may be used either separately or together.
In the drawings, AA represent the common frame-work of a screw-cutting machine. The ring B, cutting-tool O, and its adjustable tool-bed D are also common features in this class of machines. The first feature of our invention is the half-die F, which holds the cutter G. This the is pivoted at a to the frame A, and its upper part constitutes a handle, F, for setting the die and cutter in position. When these are not in use they are held up out of position by means of a spring, I), and its tension is so strong that it will instantly throw the die up out of place against a stop-pin, 0, when the screw-thread has been cut the desired length, at which time the screw, being fed forward, presses upon the gage, which with its intermediate mechanism instantly releases the die. H represents the gage, which, by means of a set-screw, may be set on the gage-rod B, so that a thread may be cut of any length. This rod lies loosely in hearings on the sides of the framework A A. Upon one end of this rod, outside the frame A, is attached one end of a lever, I, pivoted at its center to a fulcrum, cl, on the frame A. On the opposite end of the lever is a pin, m, which, by means of a spring, a, is thrown inward, so as to enter a hole in the die-handle, whenever the handle is pulled down ward. It
is the pin which holds the die in place, audit is by an automatic withdrawal of thepin that the die and cutter are thrown up out of place. Then the wood-screw may be easily withdrawn by hand.
In Fig. 1 we have shown adouble die. Both dies may be pivoted to the frame on the same fulcrum, and at pleasure either one may be removed from contact with the screw but the lower die is not an essential feature of our invention.
Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-
1. In a wood-screw-cutting machine, a die, F, in combination with the cutter G, substantially as and for the purpose set forth.
2. The combination of thegageHand gagerod H with the lever I, spring 02, and pin m, for automatically operating the dies, substantially as set forth.
GEORGE W. GHAMBERLIN. SEWELL G. GUSHING.
Witnesses:
CHARLES T. GUsHINe, WILLIAM A. OARLETON.
Publications (1)
Publication Number | Publication Date |
---|---|
US167988A true US167988A (en) | 1875-09-21 |
Family
ID=2237397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US167988D Expired - Lifetime US167988A (en) | Improvement in machines for cutting wood-screws |
Country Status (1)
Country | Link |
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US (1) | US167988A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4287627A (en) * | 1980-03-19 | 1981-09-08 | Chambers Bruce J | Method and means for threading dowels |
-
0
- US US167988D patent/US167988A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4287627A (en) * | 1980-03-19 | 1981-09-08 | Chambers Bruce J | Method and means for threading dowels |
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