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 numberUS720548 A
Publication typeGrant
Publication dateFeb 10, 1903
Filing dateApr 21, 1902
Priority dateApr 21, 1902
Publication numberUS 720548 A, US 720548A, US-A-720548, US720548 A, US720548A
InventorsRalph G Whitlock
Original AssigneeRalph G Whitlock
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Device for holding loose or removable sheets of paper.
US 720548 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

"No. 720,548. PATENTED FEB. 10, 1903.

R. G. WRITLOOK. DEVICE FOR HOLDING LOOSE OR REMOVABLE SHEETS OEPAPER.

APPLICATION run 421:. 21, 1902. no 1101131,.

4 from/v5 Y ms PEYERS cu. PwfO-LITHO WASHINGYDN. n. c,

UNITED STATES PATENT OFFICE.

RALPH Gr. VVHITLOCK, OF LOS ANGELES, CALIFORNIA.

DEVICE FOR HOLDING LOOSE OR REMOVABLE SHEETS OF PAPER.

SPECIFICATION forming part of Letters Patent N 0. 720,548, dated February 10, 1903. Application filedApril 21, 1902. Serial No. 104,086. (No model.)

To all whom it may concern.-

Be it known that I, RALPH G. WH1'rLocK,of the city of Los Angeles, in the county of Los Angeles and State of California, have invented a Device for Holding Loose or Removable Sheets of Paper, of which the following is a full, clear, and exact description or specifica tion, reference being had to theannexed drawings, and to the letters marked thereon.

My present invention is a further development of the invention for which I have filed application for Letters Patent on the 10th day of January, 1902, Serial No. 89,231, and have obtained Letters Patent No. 700,867, dated May 27, 1902.

My present improvements consist insubstit-uting a single shaft which is capable of a rotatory movement for turning aronndthe rings which carry the loose sheets of'paper into any position of rotation of the said ring required, which shaft is also capable of being moved longitudinally for opening .the rings when required for either moving the sheets of paper from the device or for placing sheets of paper therein in the manner hereinafter described. I

Upon the annexed sheets of drawings, Fig ure 1 is a plan of the device constituting my present invention. Fig. 2 is a transverse section of the same upon the line a a, Fig. 1. Fig. 3 is an end elevation of the device shown folded or closed, as a book, and containing loose or detached sheets of paper held book Wise therein. Fig. 4 is an end elevation of one of the opening and closing rings whereon the loose papers are carried within the apparatus, showing also the arms, one of which is attached to each division of the ring for the purpose of enabling the square shaft used in the device to rotate and open and close the rings, also showing this part of the apparatus in dotted lines when opened for receiving papers or for having papers placed thereon. Fig. 5 is a plan corresponding to Fig. 4:. Fig. 6- is an end elevation of one of the rings shown with its two parts hinged together instead of being connected bya spring, as shown in Figs. 2 and 4. Fig. 7 is a plan of the inner portion of one of the loose sheets of paper, showing the holes therein by which the sheet of paper is placed upon the rings of the device.

As shown upon the drawings, the rings of the device (marked A A) are provided with internal arms B B, fixed to or forming part of each half of the rings A A, which internal arms B B are constructed at their upper part with a square hole 0, as shown more particularly at Figs. 2, 3, 4, and 6, one-half of each such square hole 0 being situated in each arm B, as shown. square shaft D is carried, and by rotating the square shaft when all the parts of the device are in the position shown at Figs. 1, 2, 3, and 6 the arm B B and the rings A A, forming part of or connected thereto, are moved atigularly-that is to say, rotated into whatever position may be necessary for opening the rings A A and removing therefrom or placing thereon loose sheets of paper while the opening of the rings is effected by then drawing the-square shaft D outward by means of the thumb and finger being applied to the key E. The rotary movement of the rings A A is provided for by the wood or other material of the back J being cut out, as shown in the drawings, so asto constitute a completely non-obstructing recess in the wood or other material for each ring A to be rotated in to the extent of the small angular movement, being all of such movement necessary Within this square hole 0 they to admit of the removal or entrance of any loose or separate sheets or leaves of paper from or into the device. This pulling outward of the key E causes the wedge-shaped portions F and G, respectively, upon the square shaft D to be drawn into the halves of the square hole 0 in each pair of arms B B of each ring A, and as the wedge-shaped portions F and G are thus drawn forward-that is to say, into or through each half-square hole 0 in each pair of arms B Bit follows that the armsB B and the position of the rings A, to which each pair of arms B B is attached, are bent outward to support the terminals of the rings (marked a and b, respectively) of a spring L, as in Figs. 4 and 2, or by means of a hinge-joint, as in Fig. 6 and as shown in the drawings of my two aforesaid former applications for Letters Patent, the manner of uniting the two halves of the rings A A by means of ahinge-joiut not constituting any essential part of my present invention.

\Vith the View of causing the rings A A and the arms B B to close with positive action when the wedge-shaped portions F and G of the square rod D are pushed backward a spring may be applied to press upon each of the arms B B, such springs being shown at 7.; k, Fig. 6. The tendency of each of these springs or their equivalents is to press the two arms 13 B and the two halves of the rings A A into the closed or shut position. Such springs may be fastened to the material of the back J of the device and shaped to press upon the upper part of the arms B B, as is shown more particularly at Fig. 6.

For the purpose of covering over the square shaft D and its wedge-shaped portions F and G a thin metallic shield I, part of which only is shown in Fig. l, is fastened to the wood or other material (marked J) constituting the main port-ion of the back of the device, and the entire device is covered over with or inclosed in a flexible cover K. (Shown open in Figs. 1 and 2 and closed in Fig. 3.)

To prevent the rod D from being pulled out of the square holes in the arms B B or to be pushed forward too farinto these holes, a stop a in the outer end of the wedge F and a stop (Z at the forward end of the wedge G are respectively placed therein. It is to be understood that the key E fits upon the end of the square shaft D, and the key has a slit in it to engage with a pin in the outer end of the shaft D, acting after the manner of a bayonet-joint, which attaches the key temporarily to the shaft D and prevents it from being pulled ed the shaft when the shaft D is pulled outward to open the rings A A.

Having now described the nature of my said invention and the best system, mode, or manner I am at present acquainted with for carrying the same into practical effect, I desire to observe in conclusion that what I consider to be novel and original, and therefore claim as the invention to be secured to me by Letters Patent, is as follows:

1. The device for holding or binding together loose or removable sheets of paper, said device consisting of a back portion with flat top portions, wherein one or more rings capable of being rotated are carried, said portions containing a rotatably-slidable square shaft with wedge portions thereon, said rings being acted upon by springs, tending to keep said rings shut, the springs, said shaft being provided with stops and a key, said rings having internal arms which when closed form a square hole whereinto the square shaft fits, the binding or cover,the whole contained within the binding or cover, and all operating together in the manner and for the purposes substantially as set forth.

2. The combination consisting of the flexible back, the fiat-topped portions of said back, the one or more spring-connected rings held in said back, the sliding and rotating square bar with the wedge portions thereon and key for operating the same; the stops on said bar, the arms within the opening and closing rings the stops on said square bar, the half-square holes in each arm of each half of the opening and closing rings, the covers or inclosure of the device, all operating together in the manner and for the purposes substantially as set forth.

In testimony whereof I have hereunto set my hand and seal, this 10th day of April, A. D. 1902, in the presence of two subscribing witnesses.

RALPH G. WIII'ILOGK.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2511153 *Nov 1, 1944Jun 13, 1950Gen Binding CorpLoose-leaf binder
US6276862Sep 15, 1999Aug 21, 2001Acco Brands, Inc.Binder mechanism
WO1990006236A1 *Nov 25, 1989Jun 14, 1990David HegartyDocument support stand and lockable actuating keeper
Classifications
Cooperative ClassificationB42F13/0026