US256157A - Saw-mill head-block - Google Patents
Saw-mill head-block Download PDFInfo
- Publication number
- US256157A US256157A US256157DA US256157A US 256157 A US256157 A US 256157A US 256157D A US256157D A US 256157DA US 256157 A US256157 A US 256157A
- Authority
- US
- United States
- Prior art keywords
- saw
- block
- lever
- head
- pawls
- 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
- 210000003127 Knee Anatomy 0.000 description 18
- 235000001211 Talinum portulacifolium Nutrition 0.000 description 2
- 240000004958 Talinum portulacifolium Species 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
- B26D1/143—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis
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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
- Y10T74/15—Intermittent grip type mechanical movement
- Y10T74/1558—Grip units and features
- Y10T74/1565—Gripper releasing devices
- Y10T74/1566—Power pawl lifter
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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
- Y10T83/00—Cutting
- Y10T83/647—With means to convey work relative to tool station
- Y10T83/6492—Plural passes of diminishing work piece through tool station
- Y10T83/6499—Work rectilinearly reciprocated through tool station
- Y10T83/6508—With means to cause movement of work transversely toward plane of cut
- Y10T83/6515—By means to define increment of movement toward plane of cut
- Y10T83/6518—By pusher mechanism
Description
(No Modem 2 sheets-sheem. l
E'. au I. D. PARKER.
SAW MILL HEAD BLOCK: No. 256,157.l Patented Apr. 11.1882.
[mill 'WIl |||l ||1| llltllllllllluljlllhnllluimmuun|||||l||||||||||||||||llllllugllulwllllgll (No Model.)
2 sheetssheet 2.
E. 851. D. PARKER.
WITNESSES yam - I WQ 69W@ INVENTOR i UNITE" STATES PATENT OFFICE.
EZRA PARKER AND ISAAC D. PARKER, OF PLAINFIELD, ASSIGNORS TO H. St F. J. L. BLANDY, OF ZANESVILLE, OHIO.
SAW-MILL HEAD-BLOCK.
SPECIFICATION forming part of Letters Patent No. 256,157, dated` April 11, 1882,
Application filed December 17, 1R81.
To all whom 'it may concern:
Be it known that we, EZRA PARKER and ISAAC D. PARKER, of Plaintield, in the county of Coshocton and state of Ohio, haveinvented certain new and useful Improvements in Saw- Mill Head-Blocks; and we do hereby declare the following to be a full, clear, and eXact description ofthe invention, such as will enableV others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this speciticaton.
Our invention relates to saw-mills; and it consists in an improvement in lever headblocks, or in any other devices where pawls can or may be used.
This improvement being used in sawmills necessitates the use of only one lever and one standard-quadrant instead of three. We also have a device whereby the knees of a headblock may besquared instantly and with certainty, thus saving the trouble of calculation and measurement.
In the drawings we show one manner of constructing our device adapted to be used in lever head-blocks.
Figure l represents a plan view, the lever being broken 0E. Fig. 2 represents a longitudinal sectional view taken through the line a: x, in Fig. 1, showing the quadrant down, the pawls bein gen ga ged with the ratchet-wheel. Fig. 3 is a view in side elevation of our device, taken through the line yy. This view shows-the pawls disengaged from the ratchet-wheels. Fig. 4representsa perspective view of a portion of the lever head-block, showing the manner of adjusting the blocks when one knee is in advance ofthe other and they are to be squared.
Fig. 5 represents a section taken through the center of the shafts. This view shows the shafts terminating in the center ofthe lever.
In the drawings, A represents a saw-mill carriage,on which rest the head-blocks A' A'. On the head-blocksare placed knees having racks on the under side, as shown in Fig. 4. The racks are adapted to slide in grooves in the head-block, and are operated by means of pinions c and c', that are attached to the shafts C and C'. The shafts do not connect, but revolve independent of each other, as shownin Fig. 5. They are supported by boxes d d, that (No model.)
are attached to the carriage A. To the shafts C and C' -are secured ra tenet-wheels D and D', as shown in Fig. l. l
Between the ratchet-Wheels is attached a movable lever, E, to the shafts C and C'. To the lever E are attached pawls F and F', that operate independent of each other and engage with the teeth ofthe ratchet-wheels D and D. These pawls F and F' have pins or projections h 71., extending from their sides, which connect with quadrants Gr and G', or their equivalent devices, for liftingpawls. They are secured tothe carriage Aby means ofa hinge or equivalent joint. These quadrants are raised and lowered by independent bell-cranks e and e', the bell-cranks being secured to a standard-icl ver head-quadrant, H, which is permanently attached to the carriage A.
To the bell-cranks are secured stirrups f f', and to each stirrup are secured rods g and g', which pass through the saw-mill carriage to the sawyer's position, so that the device can be operated from either side of the saw-mill.
I represents, pawls that are attached to the standard-lever head-block and operate independently of each other. They engage with the ratchet-wheels D D', and prevent them from turning back when the pawls F and F' are disengaged from the ratchet-wheel. They are adapted to be raised and lowered similar to the pawls F and F', so as to allow the knees B and B' to be drawn back.
J J are lugs attached to the head-block by means of a cord or chain. These lugs are adapted to be placed in holes j in the headblock, and are placed at any desirable distance apart.
To the side of the knees B and B' are secured pins K K, or any othersuitable device. These pins are to be placed so as to come in contact with the pins J J when the knees are IOO ' wheel D, while the pawl on v the opposite side of the lever E is engaged with the ratchetwheel D', as shown in Fig. 2. The lever being operated now will cause the ratchet-wheel to revolve and turn the shaft C', to which the pinion c is attached. This pinion, meshing with therack b,willforce thekneeB forward. When carried forward t0 the desired distance the quadrant Gr is lowered, aud both ratchet-wheels will revolve equally.
When it is desirable to square the knees thel pawls are disengaged from the ratchet-wheels and the knees drawn back until the projection K strikes the pin J. This enables the operator to adjust them instantly without calculation and with certainty.
What we claim is- 1. In a saw-mill head-block, the combination,
with the lever and its quadrant for adjusting the head-block, ot' two independent quadrants hinged upon the carriage, one on either side of the lever, and provided with bell-crank levers and adapted to raise the pawls that operate the ratchets which regulate the adjustment of the knees, substantially as set forth.
2. In a saw-millhead-block, the combination, with the lever and its quadrant, of two hinged quadrants adapted to raise the pawls that operate the ratehets, and connected by suitable devices to operating-rods, which latter pass through the carriage to the sawyers posit-ion, substantially as set forth.
In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.
EZRA PARKER.
ISAAOD. PARKER. Witnesses:
W. H. WILMoT, J. N. HOWARD.
Publications (1)
Publication Number | Publication Date |
---|---|
US256157A true US256157A (en) | 1882-04-11 |
Family
ID=2325446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US256157D Expired - Lifetime US256157A (en) | Saw-mill head-block |
Country Status (1)
Country | Link |
---|---|
US (1) | US256157A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040092514A1 (en) * | 2002-09-30 | 2004-05-13 | Upender Velaparthi | Novel tyrosine kinase inhibitors |
US10857693B2 (en) | 2016-07-21 | 2020-12-08 | Jeff Barber | Sawmill with a rocking carriage |
-
0
- US US256157D patent/US256157A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040092514A1 (en) * | 2002-09-30 | 2004-05-13 | Upender Velaparthi | Novel tyrosine kinase inhibitors |
US10857693B2 (en) | 2016-07-21 | 2020-12-08 | Jeff Barber | Sawmill with a rocking carriage |
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