US301810A - James p - Google Patents
James p Download PDFInfo
- Publication number
- US301810A US301810A US301810DA US301810A US 301810 A US301810 A US 301810A US 301810D A US301810D A US 301810DA US 301810 A US301810 A US 301810A
- Authority
- US
- United States
- Prior art keywords
- cranks
- power
- crank
- lever
- treadle
- 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
- 210000000707 Wrist Anatomy 0.000 description 8
- 239000004575 stone Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 210000003414 Extremities Anatomy 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003292 diminished Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/16—Means for transmitting drive
- B60S1/166—Means for transmitting drive characterised by the combination of a motor-reduction unit and a mechanism for converting rotary into oscillatory movement
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- 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
- F16H—GEARING
- F16H21/00—Gearings comprising primarily only links or levers, with or without slides
- F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
- F16H21/40—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and oscillating motion
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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
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18144—Overcoming dead center
-
- 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
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18184—Crank, pitman, and lever
Definitions
- My invention relates to improvements in treadle-motions or foot-powers forlight machinery; and it has for its object to reduce the fatigue inherent to such powers or motions, and also to avoid dead-centers.
- the invention consists in providing the driven shaft with a double crank,'one of which is longer than the other, operated from a pitman and from a lever and pitman, respectively, connected with a treadle-bar, said parts forming practically or substantially a parallelogram.
- the invention further consists in arranging the two cranks so that one will be slightly in the lead of the other-that is to say, by setting the wrist-pin of one of the cranks on a line parallel with the driven shaft, but not in the same plane,whereby the liability of a stop- M bor.
- Figure 1 is an isometrical view of a grindstone frame and grindstone, showing the double crank 011 the grindstone-arbor on lines parallel with and in the plane of the said ar
- Fig. 2 is a like View showing one of the cranks of the arbor set to lead the other crank thereof.
- Fig. 3 is a detail View of the arbors detached on an enlarged scale, to better show the relative position of the cranks, and Fig.
- F indicates the frame, Gthe grindstone, and B the bearings bolted to said frame, and in which the grindstone-arbor A is mounted, said frame and bearings being of any usual or preferred construction.
- the arbor A has two cranks, O O.
- the former is connected by pitman P to a treadle-bar, T, and said bar is connected to the extremity of the arm 1 of a twotigue resulting from the application of the po was,is greatly reduced, inasmuch-as I obtain the same power from a treadle having one half the risethat is to say, supposing the power required to drive a grindstone of given weight and diameter by a single crank on its arbor will require a crank describing an arc of acircle of, say, four inches in diameter, by employing a double crank, O O, and making the latter four inches long, the length of the former can be reduced one-half, thus giving the treadle a rise and fall of two inches.
- cranks as described, and as shown in Fig. 1, the axes of both of the cranks and shaft lie in the same vertical plane when on their vertical dead-center, for instance; consequently the stone cannot be rotated except by moving the cranks beyond their dead-center, and by other means than through the treadlebar.
- This I obviate by setting the wrist-pin c of crank C so that the axis of said pin will lie in a different vertical plane from that of the arbor A and the wrist of the crank O,
- the treadle-motion is appli'- cable to other mechanisms or machinery, and I do therefore not desire to limit myself to its application to grindstones; nor do I wish to limit myself to the combination, with a footpower, of a double-crank shaft having one of its cranks of greater length than the other, as it is obvious that the power may be applied to the lever L by extending its upper or lower end and reversing the connection of the cranks therewith.
- the crank C may be made longer radially, ,as shown in diagram, Fig. i.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Description
(No Model.)
J. F. DYER.
TRBADLE MOTION. No. 301,810. v U Patented July 8, 1884.
:wiag I mi 9 \ml UNITED STATES PATENT; OFFICE.
JAMES F. DYER, OF ATLANTA, GEORGIA.
TREADL E- MOTION.
SPECIPICATIONTorming part of LettersPatent No. 301,810, dated July 8, 1884.
Application filed April 18, 1884.- (N model.)
To all whom it may concern.-
Be it known that I, JAMES F. DYER, a subject of the Queen of England, residing at Atlanta, in the county of Fulton and State of Georgia, have invented certain new anduseful Improvements in Treadle-Motions; and I do hereby declare the following to be'a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.
My invention relates to improvements in treadle-motions or foot-powers forlight machinery; and it has for its object to reduce the fatigue inherent to such powers or motions, and also to avoid dead-centers.
The invention consists in providing the driven shaft with a double crank,'one of which is longer than the other, operated from a pitman and from a lever and pitman, respectively, connected with a treadle-bar, said parts forming practically or substantially a parallelogram.
The invention further consists in arranging the two cranks so that one will be slightly in the lead of the other-that is to say, by setting the wrist-pin of one of the cranks on a line parallel with the driven shaft, but not in the same plane,whereby the liability of a stop- M bor.
page of the cranks on their dead-centers is greatly diminished, if not absolutely avoided, all substantially as hereinafter more fully described.
In the annexed drawings I have illustrated my invention in its application to a grindstone, though it may be applied to any other machinery adapted to be operated by footpower.
Figure 1 is an isometrical view of a grindstone frame and grindstone, showing the double crank 011 the grindstone-arbor on lines parallel with and in the plane of the said ar Fig. 2 is a like View showing one of the cranks of the arbor set to lead the other crank thereof. Fig. 3 is a detail View of the arbors detached on an enlarged scale, to better show the relative position of the cranks, and Fig.
4 4 shows bya diagram a different application of the operatingdcvices.
' Like letters of reference indicate like parts in the above figures of drawings.
F indicates the frame, Gthe grindstone, and B the bearings bolted to said frame, and in which the grindstone-arbor A is mounted, said frame and bearings being of any usual or preferred construction.
As shown in Fig. 1, the arbor A has two cranks, O O. The former is connected by pitman P to a treadle-bar, T, and said bar is connected to the extremity of the arm 1 of a twotigue resulting from the application of the po wer,is greatly reduced, inasmuch-as I obtain the same power from a treadle having one half the risethat is to say, supposing the power required to drive a grindstone of given weight and diameter by a single crank on its arbor will require a crank describing an arc of acircle of, say, four inches in diameter, by employing a double crank, O O, and making the latter four inches long, the length of the former can be reduced one-half, thus giving the treadle a rise and fall of two inches. In other words, I reduce the power necessary to drive the stone by one-half. In the relative arrangement of cranks as described, and as shown in Fig. 1, the axes of both of the cranks and shaft lie in the same vertical plane when on their vertical dead-center, for instance; consequently the stone cannot be rotated except by moving the cranks beyond their dead-center, and by other means than through the treadlebar. This I obviate by setting the wrist-pin c of crank C so that the axis of said pin will lie in a different vertical plane from that of the arbor A and the wrist of the crank O,
as plainly shown in Figs. 2 and 3, thus causing the longer crank, operated indirectly from the treadle through the lever L, to slightly lead thecrank operated directly from said treadle, whatever may be the direction of ro- IOO tation of the stone. From this arrangement it will be seen that a stoppage on a dead-center becomes almost an impossibility, while an additional amount of power is gained through the extended sweep of the wrist-pin c.
As stated above, the treadle-motion is appli'- cable to other mechanisms or machinery, and I do therefore not desire to limit myself to its application to grindstones; nor do I wish to limit myself to the combination, with a footpower, of a double-crank shaft having one of its cranks of greater length than the other, as it is obvious that the power may be applied to the lever L by extending its upper or lower end and reversing the connection of the cranks therewith. Forinstance, if thelever is extended and power applied to theextensionas that of a piston, for examplcor said lever is operatcd by hand, the pitman I instead of being connected with the crank G, will be connected with the crank 0, thereby reducing the throw of the lever, and through it that of the piston. It is obvious that such an arrangement could be advantageously applied for driving a circular saw by hand, and instead of reversing the connections, as set forth, the crank C may be made longer radially, ,as shown in diagram, Fig. i.
Having now described my invention, what I claim, and desireto secure by Letters Patent, 1s-
1. The combination, substantially as herein described, of a power-lever, a double-crank shaft having cranks of different radiallengths, and connecting-rods for connecting the cranks to the power-lever to transmit the power applied thereto to both cranks simultaneously, for the purposes specified.
2. The combination, substantially as herein described, of a power-lever, a double-crankfi o shaft the wrists of which are arranged in different vertical planes, whereby one of the cranks is made to lead the other, and connecting-rods for connecting said cranks to the power-lever to transmit the power applied thereto to both cranks simultaneously, for the purposes specified.
3. The combination, substantially as herein described, of a power-lever, a double-crank shaft having cranks of different radial lengths, the wrists whereof are arranged indifferent vertical planes, and connecting-rods for connecting both cranks with the power-lever, for the purposes specified.
i. The combination, substantially as herein described, of a power-leyer, atreadle connected thereto, a double-crank shaft having cranks differing in radial length, and connecting-rods for connecting one of the cranks with the treadle and the other with the power-lever, for the purposes specified.
5. The combination, substantially as herein described, of a power-lever, a treadle connected thereto, a double-crank shaft having cranks differing in radial length, the wrists whereof lie in different vertical planes, and connect ing-rods for connecting one of said cranks with the treadle and the other with the power-lever, for the purposes specified.
In testimony whereof" I affix my signature in presence of two witnesses.
, JAMES F. DYER.
YVitnesses:
O. E. JARVIS, DANIEL Irrcnronn.
Publications (1)
Publication Number | Publication Date |
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US301810A true US301810A (en) | 1884-07-08 |
Family
ID=2370983
Family Applications (1)
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US301810D Expired - Lifetime US301810A (en) | James p |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016151271A1 (en) * | 2015-03-26 | 2016-09-29 | REY, Florence | Force-increasing system |
-
0
- US US301810D patent/US301810A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016151271A1 (en) * | 2015-03-26 | 2016-09-29 | REY, Florence | Force-increasing system |
FR3034160A1 (en) * | 2015-03-26 | 2016-09-30 | Eric Valat | FORCE INCREASE SYSTEM |
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