US263171A - Saw-guard - Google Patents

Saw-guard Download PDF

Info

Publication number
US263171A
US263171A US263171DA US263171A US 263171 A US263171 A US 263171A US 263171D A US263171D A US 263171DA US 263171 A US263171 A US 263171A
Authority
US
United States
Prior art keywords
hood
saw
plates
guard
guide
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 US263171A publication Critical patent/US263171A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27GACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/02Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/95Machine frame
    • Y10T83/96Guard

Description

(No Model.)
J. G. GROPP.
' SAW GUARD.
No. 263,171. Patented Aug. 22, 1882 ,WIZKNIJSS ES N. ETERS PlmlvLimo n her, Washingion. Dv C.
NITED STATES PATENT OFFICE.
JOSEPH G. GROFF, OF OONNEBSVILLE, INDIANA.
SAW-GUARD.
SPECIFICATION forming part of Letters Patent No. 263,171, dated August 22, 1882.
Application filed May 22, 1882.
To all whom tt may concern.-
Be it known that I, JOSEPH G. GEOFF, of Oon nersville,i11 the county of Fayette and State of Indiana,havein\'ented certain new and useful Improvements in Hoods or Guards for Gircular Saws; and I do hereby declare the following to be a full,clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a side elevation of my invention; Fig. 2, a sectional elevation of the same, taken on the line or as, Fig. l; and Figs. 3 and 4 are detail sectional views taken respectively on lines 3 y and z a, Fig. 1.
Similar letters of reference in the several figures denote the same parts.
My invention relates to improvements in hoods or guards for circular saws; and it consists in the novel construction of the parts and the several combinations and sub-combinations of the same, which I will first describe, and then point out particularly in the claims.
Referring to the drawings, A represents the semicircular rim of the hood, rabbeted at its lateral edges to receive the removable sides, and having rearwardly-projec'ting slotted arms D D and a forward-inclined projection, O, as shown.
B represents the removable sides of the hood, made of heavy tin, glass, or other suitable material, and secured within the rabbeted por- {ion of the rim Aby means of screws or other fastenings which will permit the ready removal and replacement of said sides and facilitate repair in case of accident.
F F are upright plates which are embraced by the slotted arms D D of the hood, and serve to guide and support the hood in its upward and downward movements. These plates F F are of steel or other suitable material, preferably wed ge-shaped in cross-section, as shown in Fig. 4, and are secured at their bottom to a dovetail plate, I, which is adjustable endwise in a corresponding bed-plate, J, let intothe top of the table and secured by screws, as shown in Fig. 2. A set-screw, d, enables the plate I to be secured to said bed-plateJ at the point desired. The plates F F work in the slot or kerf made by the lumber and serve to protect the rear of the saw. Instead of being (No model.)
wedgeshaped, the plates may be thin and of uniform thickness, with the front edge of the forward one beveled. The slotted arms D D are-united and braced by a connecting-bar, f, and each of said arms carries a friction-roller, c, which is adapted to work up and down in the slot or space between the two plates F F, so as to facilitate the raising and lowering of the hood. 1
Upon the upper ends of the plates F F is.
fitted a cap, G, and journaled in this cap isa grooved wheel or pulley, H,over which passes a cord, K, fastened at one end to the upper arm, D, and carrying at its other end a weight, M, which operates to partly counterbalance the hood.
A spring, L, connected to the cap G and also to the upper arm,'D, may be employed to assist the weight in raising the hood, and another spring, 0, mounted on the plate F, operates to hold the hood up when raised for any purpose.
For the purpose of steadying the front of the hood a sharp-edged wheel, E, is arranged at the base of the projection G, and a spring, b,l1eld by screws a or other fastenings, is caused to bear with yielding pressure upon said wheel E.
The operation of the device is as follows: The board or other article to be sawed is pushed along the table, and, striking the inclined projection G, raises the hood and passes under the wheel (J against the saw, the hood settlingdown upon top of the board and the sharp wheel 0 steadying the front of the hood. As the board progresses in its forward movement the wed ge-shaped plates F F enter the kerf cut by the saw, and by separating the parts of the board keep the saw clear. When the board has passed from under the hood the latter settles down upon the table again, as before.
It will be observed that the saw is kept covered by the hood during the whole operation of sawing, thus preventing injury to the operator through accident or unskillfulness.
When desired the hood can be raised by means of the projection O and held elevated by the spring 6.
Having thus described my invention, I claim as new- I. The combination of the hood, the rearweirdly-extending slotted arms embracing the guide-plates, with said guide-plates having the slot between them, and the friction-wheels mounted in said arms and working in the slot between the guide-plates, substantially as described.
2. The combination, with the hood, of the rearward slotted arms, the vertical guideplates, the grooved pulley, the weight, and the cord connected at one to-the rearward arm and at the other to the weight, substantially as described.
3. The combination, with the guide-plate, of the hood having the rearwardly-extending slotted arms embracing the guide-plates and I 5 of the hood having the rearwardly-extending 2o slotted arms embracing the guide-plates and the sharp-edged wheel, and a bearing-spring at the front of the hood, substantially as described, for the purpose specified.
JOSEPH G. GEOFF. Witnesses:
WILLIAM G. FoRREY, CHARLES H. BROOKBANK.
US263171D Saw-guard Expired - Lifetime US263171A (en)

Publications (1)

Publication Number Publication Date
US263171A true US263171A (en) 1882-08-22

Family

ID=2332447

Family Applications (1)

Application Number Title Priority Date Filing Date
US263171D Expired - Lifetime US263171A (en) Saw-guard

Country Status (1)

Country Link
US (1) US263171A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2953773A1 (en) * 2012-12-11 2015-12-16 Robert Bosch GmbH Circular saw blade guard with scratch-resistant panel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2953773A1 (en) * 2012-12-11 2015-12-16 Robert Bosch GmbH Circular saw blade guard with scratch-resistant panel

Similar Documents

Publication Publication Date Title
US263171A (en) Saw-guard
US313025A (en) Band sawing machine
US1359394A (en) Intermittent and oscillatory rotary cut-off saw-machine
US769497A (en) Band-saw.
US646125A (en) Combined mortising and boring machine.
US623786A (en) humphrey
US469177A (en) sperey
US606035A (en) Half to the g
US385693A (en) Saw-sharpening machine
US760566A (en) Saw-grinding machine.
US529839A (en) Sawing-machine
US913078A (en) Sawing-device.
US250712A (en) Circular sawing machine
US107270A (en) Improvement in saw-dressing machine
US1305053A (en) Band-saw stave-jointer
US373680A (en) Key and key-seat cutter
US122695A (en) Improvement in sawing-machines
US604714A (en) Hack-saw machine
US287275A (en) Circular sawing machine
US799837A (en) Gang cut-off sawing-machine.
US497070A (en) farwell
US392943A (en) blake
US1123442A (en) Sawing-machine.
US131949A (en) Improvement in machines for cutting miters
US11211A (en) Machine for creasing and beveling barrels