US379656A - Ratchet mechanism for saw-mill set-works - Google Patents

Ratchet mechanism for saw-mill set-works Download PDF

Info

Publication number
US379656A
US379656A US379656DA US379656A US 379656 A US379656 A US 379656A US 379656D A US379656D A US 379656DA US 379656 A US379656 A US 379656A
Authority
US
United States
Prior art keywords
dogs
ratchet
wheel
carrier
carriers
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
Application number
Publication date
Application granted granted Critical
Publication of US379656A publication Critical patent/US379656A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/04—Vices with pivoted jaws
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/09—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
    • F16D1/093—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping
    • F16D1/094—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping using one or more pairs of elastic or segmented rings with mutually mating conical surfaces, one of the mating rings being contracted and the other being expanded
    • 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
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20396—Hand operated
    • Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
    • Y10T74/2042—Flexible transmitter [e.g., Bowden cable] and hand operator
    • Y10T74/20426—Slidable
    • 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
    • Y10T74/21—Elements
    • Y10T74/2133—Pawls and ratchets
    • Y10T74/2136—Pivoted pawls
    • Y10T74/214—Multiple tooth
    • 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
    • Y10T74/21—Elements
    • Y10T74/2133—Pawls and ratchets
    • Y10T74/2141—Sliding pawls

Definitions

  • This invention relates to improvements in that class of ratchet mechanisms that are used for operating the set-shafts of sawmill carriages; and my invention consists, generally, in the construction and combination hereinafter described, and pointed out in the claim.
  • Figure 1 is a side elevation of a ratchet mechanism constructed in accordance with my invention.
  • Fig. 2 is a partial side elevation of the ratchet-wheel and section of the pawl-carriers.
  • Fig. 3 is a plan of one of the carriers with the top plate removed.
  • Fig. 4 is a transverse vertical section of one of the carriers and a portion of the wheel.
  • Fig. 5 is a transverse vertical section of the carriers and a portion of the wheel, showing a modified arrangement.
  • Figs. 6 and 7 are details.
  • the ratchet-wheel may be mounted directly on the set-shaft of the carriage in the usual way, or it may be mounted 011 a counter-shaft that is connected by suitable gearing with the set-shaft, as shown in my Patent No. 352,838, granted November 16, 1886.
  • 2 represents the shaft to which the ratchet'wheel is secured. This shaft is mounted in suitable bearings upon the sawmill carriage.
  • the operating-lever 3 is'secured to a rock-shaft, 5, mounted in suitable bearings and provided with crank-arms 7 and 9.
  • An are or quadrant, 11, which is preferably provided with pins or stops 15, is secured to the frame in position so that the lever or an attachment thereon strikes against one of the pins as the lever is moved in either direction.
  • the ratchet-wheel 13 may be of any ordinary form or construction. It has the usual ratchet-teeth and may be provided upon each side with an annular groove, 17, located near its edge.
  • the mechanism is provided with two pawlcarriers that are secured to the wheel, and each holdsa series of sliding pawls or dogs, any
  • the pawl-carriers each consist of a box or frame, 21, having a series of openings, 23, in each of which is placed a sliding dog, 25.
  • the carriers are formed with suitable bearings for the sliding dogs, preferably at the ends, and in the center of each dog, as shown in Fig. 3.
  • a plate, 27, is provided for each carrier. This plate fits over the top of the carrier and holds the dogs in place. The weight of the dogs causes them to slide downward in the carriers into position to engage the teeth of the ratchet. I prefer,- however, to provide aspring, 29, for each dog, that tends to press it down into engagement with the ratchet-wheel.
  • springs are arranged in the carrier between the dogs and the plate 27.
  • the springs 29 are shown as elliptic springs. I may, however, use suitable coiled
  • the sliding dogs and the teeth of the ratchet-wheel are preferably differentially spaced, so that a fine adjustment of the wheel may be made.
  • the four dogs may be arranged to cover five teeth on the wheel, and in order that there may be considerable metal in the carrier between every two dogs I prefer to arrange them as shown in Fig. 2.
  • the middle space, or that between the second and third dogs is equal to one and three-quarters tooth of the wheel, and the other spaces between the dogs are equal to one and a half tooth of the wheel.
  • the first dog in the carrier is in engagement with the ratchet, as shown at the righthand side of Fig. 2
  • the second dog is one-half of a space from the point of a tooth, the third one-quarter, and the fourth three-quarters.
  • Each of the carriers is provided with keys 33, that fit into the grooves 17 on the sides of the ratchet-wheel'and hold' the carriers in place.
  • the carriers are also connected by rods 35 37 with the crank-arms 7 and 9.
  • the back carrier is preferably connected to its crankarm 9 by a single connecting-rod, 37, that is pivoted to the crank-arm and to one end of the carrier, while the other is connected by two connecting-rods, 35, pivoted upon each side thereof and passing uponopposite sides of the back carrier, to the crankarm 7.
  • the ratchet mechanism is operated by moving the lever 3 in either direction, thereby advancing one of the pawlm-arriers and receding the other.
  • the ratchet-wheel is thereby continuously rotated.
  • the carriers may be connected by carrier-arms 43 with the shaft, and thereby be held upon the edge of the wheel, and the groove 17 and keys 33 may be dispensed with, as shown in Figs. 2, 6, and 7.
  • each carrier may arrange them side by side, as shown in Fig. 5, and connect each one with the shaft by the carrier-arm 43.
  • the width of each carrier is equal to about one-half the width of the face of the wheel.
  • This ratchet mechanism possesses many advantages over those commonly used.
  • the mechanism is very strong, as with this mode of spacing the dogs a fine adjustment may be obtained without using fine teeth and small dogs.
  • the mechanism is also inexpensive and the dogs and springs are substantially inclosed on all sides and protected from dust and dirt.
  • the pawl-carrier arranged over the face of the wheel and having-the series of openings 23 extending through it, the cap-plate secured upon said carrier and covering all of said openings, the series of sliding dogs arranged in said openings, and the springs arranged in said openings between said dogs and said plate, all substantially as described.

Description

(No Model.) 2 Sheets-Sheet 1.
W. F. PARISH.
RATCHET MECHANISM FOR SAW MILL SET WORKS.
No. 379,656. Patented Mar. 20, 1888.
WZYneJJeJ. Inv/rn?07' N PUERS. Phblwhlnograpber. Walhmgwn. D. C.
(No Model.) 2 Sheets-Sheet 2.
W. F. PARISH.
RATGHET MECHANISM FOR SAW MILL SET WORKS. No. 379,656. Patented Mar. 20, 1888.
,,Gu -Q ans-aw UNITED STATES PATENT OFFICE.
XVILLIAM F. PARISH, OF MINNEAPOLIS, MINNESOTA.
RATCHET MECHANISM FOR SAW-MILL SET-NORKS.
SPECIFICATION forming part of Letters Patent No. 379,656, dated March 20, 1888.
Application filed May 1886. Serial No 203,065.
To, aZZ whom it may concern.-
Be it known that I, \VILLIAM F. PARISH, of Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain Improvements in Ratchet Mechanism for Saw- Mill Set-Works, of which the following is a specification.
This invention relates to improvements in that class of ratchet mechanisms that are used for operating the set-shafts of sawmill carriages; and my invention consists, generally, in the construction and combination hereinafter described, and pointed out in the claim.
In the accompanying drawings, forming part of this specification, Figure 1 is a side elevation of a ratchet mechanism constructed in accordance with my invention. Fig. 2 is a partial side elevation of the ratchet-wheel and section of the pawl-carriers. Fig. 3 is a plan of one of the carriers with the top plate removed. Fig. 4 is a transverse vertical section of one of the carriers and a portion of the wheel. Fig. 5 is a transverse vertical section of the carriers and a portion of the wheel, showing a modified arrangement. Figs. 6 and 7 are details.
The ratchet-wheel may be mounted directly on the set-shaft of the carriage in the usual way, or it may be mounted 011 a counter-shaft that is connected by suitable gearing with the set-shaft, as shown in my Patent No. 352,838, granted November 16, 1886.
In the drawings, 2 represents the shaft to which the ratchet'wheel is secured. This shaft is mounted in suitable bearings upon the sawmill carriage. The operating-lever 3 is'secured to a rock-shaft, 5, mounted in suitable bearings and provided with crank-arms 7 and 9. An are or quadrant, 11, which is preferably provided with pins or stops 15, is secured to the frame in position so that the lever or an attachment thereon strikes against one of the pins as the lever is moved in either direction.
The ratchet-wheel 13 may be of any ordinary form or construction. It has the usual ratchet-teeth and may be provided upon each side with an annular groove, 17, located near its edge.
The mechanism is provided with two pawlcarriers that are secured to the wheel, and each holdsa series of sliding pawls or dogs, any
springs in place thereof.
(No model.)
one of which is adapted to engage with the teeth of the ratchet-wheel. The pawl-carriers each consist of a box or frame, 21, having a series of openings, 23, in each of which is placed a sliding dog, 25. The carriers are formed with suitable bearings for the sliding dogs, preferably at the ends, and in the center of each dog, as shown in Fig. 3. A plate, 27, is provided for each carrier. This plate fits over the top of the carrier and holds the dogs in place. The weight of the dogs causes them to slide downward in the carriers into position to engage the teeth of the ratchet. I prefer,- however, to provide aspring, 29, for each dog, that tends to press it down into engagement with the ratchet-wheel. These springs are arranged in the carrier between the dogs and the plate 27. The springs 29 are shown as elliptic springs. I may, however, use suitable coiled The sliding dogs and the teeth of the ratchet-wheel are preferably differentially spaced, so that a fine adjustment of the wheel may be made.
I prefer to provide four dogs for each carrier and to arrange them so as to divide into quarters the spaces of the teeth. The four dogs may be arranged to cover five teeth on the wheel, and in order that there may be considerable metal in the carrier between every two dogs I prefer to arrange them as shown in Fig. 2. As here shown, the middle space, or that between the second and third dogs, is equal to one and three-quarters tooth of the wheel, and the other spaces between the dogs are equal to one and a half tooth of the wheel. \Vlien the first dog in the carrier is in engagement with the ratchet, as shown at the righthand side of Fig. 2, the second dog is one-half of a space from the point of a tooth, the third one-quarter, and the fourth three-quarters. There are, in effect, therefore, four dogs to each tooth of the ratchet-wheel, which allows the ratchet mechanism to be set by quarter-divisions of the teeth. I do not, however, confine myself to this number of dogs for each carrier, as one, two, three, or more dogs may be used without departing from my invention. When two or three dogs are used, they are arranged so as to divide the ratchet-teeth into halves or thirds, and so on for any other number of dogs.
Each of the carriers is provided with keys 33, that fit into the grooves 17 on the sides of the ratchet-wheel'and hold' the carriers in place. The carriers are also connected by rods 35 37 with the crank-arms 7 and 9. The back carrier is preferably connected to its crankarm 9 by a single connecting-rod, 37, that is pivoted to the crank-arm and to one end of the carrier, while the other is connected by two connecting-rods, 35, pivoted upon each side thereof and passing uponopposite sides of the back carrier, to the crankarm 7.
The ratchet mechanism is operated by moving the lever 3 in either direction, thereby advancing one of the pawlm-arriers and receding the other. The ratchet-wheel is thereby continuously rotated.
In some instances the carriers may be connected by carrier-arms 43 with the shaft, and thereby be held upon the edge of the wheel, and the groove 17 and keys 33 may be dispensed with, as shown in Figs. 2, 6, and 7.
43 of the forward carrier extend outside of the arms of the back carrier, as shown in Fig. 7, so that the arms do not interfere when the carriers approach each other.
Instead of arranging one carrier in advance of the other, I may arrange them side by side, as shown in Fig. 5, and connect each one with the shaft by the carrier-arm 43. In this instance the width of each carrier is equal to about one-half the width of the face of the wheel. I
This ratchet mechanism possesses many advantages over those commonly used. The mechanism is very strong, as with this mode of spacing the dogs a fine adjustment may be obtained without using fine teeth and small dogs. The mechanism is also inexpensive and the dogs and springs are substantially inclosed on all sides and protected from dust and dirt.
Another great advantage is in the wearing qualities of the mechanism. As the dogs are brought at all times when at work fairly in contact with the faces of the teeth, there is very little wear, and what wear there is does not affect their operation, as when their ends become worn the dogs drop down farther in the carriers and engage the teeth asbefore. Moreover, two of the dogs maybe removed when there are four in the carrier, and the ratchetteeth will then be divided into halves by the two remaining dogs; or all but one of the dogs may he removed and the division will then be simply that made by the ratchet-teeth.
When the ratchet wheel is placedon the setshaft, a simple cam may be used to slide the teeth back into the carrier when the set-shaft is toibe reversed. When the carriers are thus arranged, the arms I claim as my invention- Thecombination, with the ratchet-wheel, of
the pawl-carrier arranged over the face of the wheel and having-the series of openings 23 extending through it, the cap-plate secured upon said carrier and covering all of said openings, the series of sliding dogs arranged in said openings, and the springs arranged in said openings between said dogs and said plate, all substantially as described.
In testimony whereof I have hereunto set my hand this 20th day of May, 1886.
WILLIAM F. PARISH.
In presence of-- A. 0. PAUL, R. H. SANFORD.
US379656D Ratchet mechanism for saw-mill set-works Expired - Lifetime US379656A (en)

Publications (1)

Publication Number Publication Date
US379656A true US379656A (en) 1888-03-20

Family

ID=2448652

Family Applications (1)

Application Number Title Priority Date Filing Date
US379656D Expired - Lifetime US379656A (en) Ratchet mechanism for saw-mill set-works

Country Status (1)

Country Link
US (1) US379656A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947187A (en) * 1957-03-15 1960-08-02 Columbia Malting Company Apparatus for the rotation of drums
US3811362A (en) * 1972-06-14 1974-05-21 Us Army Moving splitter fluidic device
US4841806A (en) * 1985-09-13 1989-06-27 Teleflex Incorporated Self-adjust mini increment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947187A (en) * 1957-03-15 1960-08-02 Columbia Malting Company Apparatus for the rotation of drums
US3811362A (en) * 1972-06-14 1974-05-21 Us Army Moving splitter fluidic device
US4841806A (en) * 1985-09-13 1989-06-27 Teleflex Incorporated Self-adjust mini increment

Similar Documents

Publication Publication Date Title
US379656A (en) Ratchet mechanism for saw-mill set-works
US162088A (en) Improvement in circular-saw mills
US401942A (en) Offset mechanism for saw-mill carriages
US167194A (en) Improvement in head-blocks for saw-mills
US1125325A (en) Pawl-and-ratchet mechanism.
US261804A (en) brooks
US1538447A (en) Guy bazeley fetter
US564530A (en) Sawmill set-works
US151432A (en) Improvement in head-blocks for saw-mills
US1272289A (en) Sawmill set-works.
US398942A (en) Saw-mill set-works
US495259A (en) James p
US282214A (en) osboejst
US321282A (en) Saw-mill set-works
US369518A (en) Saw-mill carriage
US165946A (en) Improvement in saw-mill head-blocks
US268942A (en) Apparatus for converting motion
US159236A (en) Improvement in head-blocks for saw-mills
US259102A (en) crush
US392734A (en) johnson
US423322A (en) Device for converting motion
US352838A (en) Saw-mill set-works
US199667A (en) Improvement in head-blocks for saw-mills
US734947A (en) Steam set-works for sawmills.
US1104218A (en) Belt-shifter.