Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS658716 A
Publication typeGrant
Publication dateSep 25, 1900
Filing dateJul 21, 1900
Priority dateJul 21, 1900
Publication numberUS 658716 A, US 658716A, US-A-658716, US658716 A, US658716A
InventorsCharles N Richardson, Edgar A Whitaker
Original AssigneeCharles N Richardson, Edgar A Whitaker
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Safety-hook for firemen's ladders.
US 658716 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

No. 658,7l6. I Patented Sept 25, I900. C. N. RICHARDSUNKL E. A. WHITAKER.

SAFETY HOOK FOB FIREMENS LADDERS.

(Application filed July 21, 1900.)

No Model.)

INVENTDRSI ATTY.

UNITED STATES PATENT JOFFICE...

CHARLES N. RICHARDSON AND EDGAR A. WHITAKER, OF PROVIDENCE, RHODE ISLAND.

SAFETY-HOOK FOR FIREMENS LADDERS.

SPECIFICATION forming part of Letters Patent No. 658,716, dated September 25, 1900.

Application filed July 21, 1900.

To all whom it may concern:

Be it known that we, CHARLES N. RICH- ARDSON and EDGAR A. WHITAKER, citizens of the United States, and residents of Providence, in the State of Rhode Island, have invented a new and useful Improvement in Safety-Hooks for Firemens Ladders,-of which the following is a specification.

This invention consists in the improved construction and arrangement of the parts whereby the hook may be turned to different positions and locked therein, as hereinafter fully set forth.

In the accompanying drawings, Figure 1 represents a front view of the upper end of a ladder provided with our improved safetyhooks, the said hooks being turned inwardly. Fig. 2 represents an edge view of the upper end of the ladder with the hook turned inwardly, as in Fig. 1. Fig. 3 represents the hook when turned to a position at right angles to that shown in Fig. 1. Fig. 4 represents asection taken in the line 4 f Fig. 2, and Fig. 5 represents an enlarged section taken in the line 5 5 of Fig. 1.

In the drawings, A A represent the upper ends of the side bars of a ladder, and B the upper cross-rung of the ladder, and to the outer sides of the side bars A A are secured the brackets C C, which are each provided with the recess a and the perforations b b, in which the shank c of the hook D is loosely held. Upon the shank c of the hook D is placed a spiral spring E, which is held between the shoulder d of the bracket C and the pin and washer e,-and the lower end of Serial No. 24,433. (No model.)

the shank c is provided with a shoulder f, which serves to limit the upward movement of the hook. The upper end of the bracket C is provided with the diametrically-opposite notches g g g g, by means of which the hook D may be locked in positions at right angles to each other, the said hook D being made with the corresponding projections g 9, adapted to engage with the said notches, as shown in Figs. 1 and 2, and when the hooks D D are turned inward and looked, as shown in Figs. 1 and 2, the ladder is in proper condition for transportation, and by pulling out- Ward upon the hook D against the reverse inward action of the spring E, so as to withdraw the projections g' g from the notches g g, and turning the same to engagement at right angles with the former notches, as shown in Fig. 3, the hooks of the ladder will be prepared for use upon the building.

We claim as our invention The combination of the bracket-piece provided at its upper end with the notches arranged at right angles to each other, with the hook having its shank loosely held in the bracket and adapted for turning movement, the spring for causing the locking engagement of the hook with the said notches, and

the limiting-shoulder for the upward move ment of the hook, substantially as described.

CHARLES N. RICHARDSON. EDGAR A. WHITAKER.

Witnesses:

SOCRATES SCHOLFIELD, ANDREW J. PITOHER.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2946396 *Oct 23, 1957Jul 26, 1960Mcdougal Emeline LFireman's ladder
US2966228 *Sep 13, 1954Dec 27, 1960Bethlehem Steel CorpAdjustable side shell staging
US4895336 *Oct 26, 1988Jan 23, 1990Lieberman Richard GImproved power tool
US7740222 *Dec 5, 2005Jun 22, 2010Xian-Jun WangElectronic device with a hanging mechanism
Classifications
Cooperative ClassificationA47F5/0006