US1476768A - Loose-leaf binder - Google Patents

Description

A. RUBIN LOOSE LEAF BINDER Dec. 11,1923,

Filed 001;. 16 1922 INVENTOE HAM 3A Patented Dec. 11, 1923.

UNITED STATES PATENT oF'F c.1-:.

ADOLPH RUBIN, or ST. LoUIs, MISSOURI, ASSIGNOR TO SIEBER PRODUCTS MFG. coy,

or ST. LOUIS, MISSOURI, A CORPORATION or MISSOURI.

LOOSE-LEAF BINDER; ,7

Application filed October 16, 1922. Serial No. 594,816.

T all whom it may concern:

Be it known that I, ADOLPH RUBIN, a Citizen of the United States, residing at St; Louis, Missouri, have invented a certain 3 new and useful Improvement in Loose-Leaf Binders, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

19 This invention: relates to loose lea f bind- 1 ers of the type in which the leaves are retained in position by tapes, bands or 'COI'dS that are connected to a winding shaft which is adapted to be rotated in one direction to draw the tapes taut, and thus cause the leaves to be clamped tightly between'the two leaf clamping members ofthe binder.

One object of my invention is to provide an efficient mechanism of novel design and 29 inexpensive construction for locking the winding shaft ofa loose leaf binder of the generaltype referred to. 7

-Another object is to'provide a loose leaf binder of novel construction that is equipped with a locking -means for the winding shaft which requires a special key to render it inoperative and to rotate the winding shaft'in a direction to slacken the tapes. Other objects and desirable features of my invention willbe hereinafter pointed out.

To this end I have devised a loose leaf binder that comprises a winding shaft and a coiled spring surrounding said shaft-and arranged in such a manner that it does not interfere with the'forward rotary movement ofthe shaft to tighten the tapes, but does effectively hold the winding shaft against rearward rotary movement -in a direction to slac-kenthe tapes. When it is desired to slacken the tapes'so as to remove or insert leaves in the binder, it is necessary to change the normal condition of the locking spring before the winding shaft can be turned rearwardly to slacken the tapes, and in order to reduce to a minimum the liability of'an unauthorized person removing leaves from the binder or inserting additional leaves,;I construct the winding shaft locking mechanism in such a way thata key of-a special design is required to render it inoperative and to turn the windingshaft in a direction to slacken the tapes;

Figure 1 of the drawings is'an end elevational view of a loose leaf binder constructed in accordance with my invention, showing the tapes of thebinder tightened.

Figure 2 (is a similar View, showing the tapes slackened." I V Figure 3 is a top plan view of the binder, showing the tapes slackened. I

Figure 4 is a detail view, illustrating a portion of the winding shaft and the locking spring that is combined with same, illustrating the locking spring in its normal operative condition. 05

Figure 5 is a view of the parts shown in Figure 4:, illustrating the key that is used to render the locking spring inoperative and toturn the winding shaft rearwardly to slacken the tapes; and I Figure 6 is a perspective view of the winding key.

Referring to the drawings which illustrate the preferred form of my invention, Aand A designate two leaf' clamping members between which, leaves B are arranged. C designates tapes or bands of flexible material that pass through -slots'in the leaves B and D designates a winding. shaft to which one end of the tapes C are connected, the opposite ends of said tapes being connected to'the leaf clamping member A. r The winding shaft D is rotatably mounted in bearings on the leaf clamping, member A, and means is provided for preventing an unauthorized person from rotatingsaid winding shaft rearwardly to loosen or slacken the tapes C. v I

In the form of my invention herein illustrated the meansgjust referred to comp-rises a coiled spring E surrounding the winding shaft'and arranged in such a way that while it does not interfere with the forward rotary movement of the winding'shaft, it does effectively holdthe winding shaft against rearward rotary movement. The spring E is preferably arranged at the lower end of the windingshaft D between a shaft beare E is provided at its upper end with a lateral extension t that bears againstone side of a stop 5 formed by a portion on the leaf clamping member A that extends lengthwise of the spring E, said extension 4 being pref-- erably rigidly connected to the stop 5by means of a perforated. lug or pressed portion 6 on the stop 5 into which the extension 4; on the spring extends, as shown more clearly in Figures l and 5. The spring E is provided at its lower end with a lateralextension 7 which also engages the same side or *face of'the' stop 5 that the extension 4 at the upper end ofthe spring engages, said extension 7 having no direct connection with'the'stop 5. The spring E is so proortioned and arrangedthat when it is in its-normal condition, shown in Figure 4:, forward rotary movement of the winding shaft E tends to unwind or open up the coils of said spring, and pressure applied to the winding shaft in. a direction tending to turn it rearwardly causes said winding shaft to exert pressure on the spring E in a direction totighten same, and thus cause one or more coils of the spring to exert sufficient frictional pressure on the winding shaft to securely hold same against rearward rotary movement. This is due, of course, to the fact that the lateral extension 7 at the lower end of the spring E has no direct connection with the stop 5 and is arranged in engagement with, said stop in such a Way that the twisting strain to which said spring is subjected when the winding shaft-is turned forwardly tends to move said extension 7 away from the stop 5,

therebyincreasing the diameter of the coils of the spring E and reducing the frictional pressure of said spring on the winding shaft. Any attempt to turn the Winding shaft, rearwardly, however, exerts pressure" on the spring E in a direction tendingto force the lateral extension 7 thereon tightly against the stop 5, and continued pressure on the winding shaft in this direction tightens the 7 spring and causes one or more coils of same to clamp the winding shaft tightly "enough to prevent it from turning rearwardly. To

state it in another'way, the means that'is used for preventing the winding shaft from being turned insa direction to slacken the tapes of the binder, consists merely of a coiled spring E wrapped around the wind' ing shaft insuch a Way and combined with a; stationary stop in such a manner that pressure applied to the Winding shaft in a direction tending to turn it rearwardly draws one or more coils of said spring into, sufiiciently snug engagement with the winding'shaftto securely lock the same or hold;

it against rearward rotary movement, said spring also being preferably arranged in such a way that forward rotary moi ement of the winding shaft untwists or opens up the coils of the spring, and thus relieves the the spring on. the V frictional pressure of winding shaft. J b 5 A'key is used for rotating the winding shaft D and in order to eliminate the possibility of an unauthorized; person releasing the winding shaft and turning said shaft rearwardly to slacken the tapes, I have de vised the winding shaft locking means in such a way that it can be rendered inoperative only by a winding key F of special design. The locking spring E is adapted .to be renderedinoperative by changing the position-ofthe lateral extension 7 on said spring relatively to an inclined, surface or camsB on the leaf clamping memberA-that is arranged in proximity tosaidextension 7. In

the form of my invention herein illustrated a the cam Sis arranged on the side thefs't'op 5 against-wl1ichthe extension 7 bears at a point slightly above said extension, when the spring Eis in its normal operative condition, as shown in Figure 4.' To; render the locking spring E inoperative, said spring is compressed endwise so as to cause the extension 7 thereon to ride up onto the cam 8, and thus twists saidispringin a di: rection'to increase the diameter of the coils of same sufficiently to prevent said coils from tightening sufficiently to clamp] the winding shaft D when saidshaft is turned rearw'ardly, -'lhe winding key F is; provided with a tubular portion 9 that is adapted to be slipped over the lowerend of the winding shaft D, and an: inclined slot 10 is formed in said tubular portion9 so as to produce a shoulder 1 1 and a wedge or cam 12, as shownin'Figure 6. To turn the Winding shaft D forwardly so as totighten the'tapes C, the tubular-portionfl of the winding key IF is slipped over the lower; endof the winding shaft in such a way that the pin 3 "will enter th'e slot 10and saidkey is thenturned'to the'right, so as to cause the shoulder 11 thereonto engage the pin 3 on the winding shaft,- and thus transmit the rotary movement of the key to the winding llO shaft." When it is-desired to render the locking spring E inoperative, the tubular portion-9 of the winding key is arranged 1 in such away that the'pin 3 on thejwinding shaft is in alignment with the slot 10 in said tubular portion, and said tubular'portion is then slipped upwardly over the winding shaft and turned to the left so as to cause the cam or wedge portion 1201 same to be forced between the pin 3*on the winding shaft and the washer 2 located above the same-thereby moving the washer 2 upwardly relatively to the pin-*3'and causingthe' lateral extension? on the locking spring E to ride up onto the cam 8, as shown in Fig ure 5. This, of course, causes the locking spring E' to be rendered inoperative,-as previously described, and thereafter ;the winding shaft can be turnedrearwardly in a direction to slacken the ltapesby turning the winding key F to the-left. Various means can be used to prevent the winding shaft .D from moving longitudinally of its hearings on the leaf clamping member A when the wedge portion 12 of the key F is forced between the pin 3 and washer 2 to compress the spring E, the means herein shown consisting of an abutment 13 on the winding shaft that lies between two shaft bearings on the leaf clamping member A, as shown in Figure 3.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A loose leaf binder, comprising a winding shaft, and a coiled spring surrounding said shaft and arranged in such a way that pressure applied to said shaft in a direction tending to turn it rearwardly causes one or more coils of said spring to be drawn intosufficiently snug engagement with said shaft to lock or hold same against rearward rotary movement.

2. A loose leaf binder, comprising a winding shaft, a coiled spring surrounding said shaft and arranged in such a way that pressure applied to said shaft in a direction tending to turn it rearwardly causes one or more coils of said spring to be drawn into sufliciently snug engagement with said shaft to lock or hold same against rearward rotary V movement, and means for changing the normal condition of said spring so as to render it inoperative for holding said shaft, when said shaft is subjected to pressure in a direction tending to turn it rearwardly.

3. In a loose leaf binder, a winding shaft, and a coiled spring surrounding said shaft and arranged in such a manner that it doe-s not interfere with the forward rotary movement of said shaft. but does prevent said shaft from being turned rearwardly.

4. In a loose leaf binder, a winding shaft, a coiled spring surrounding said shaft and arranged in such a manner that it does not interfere with the forward rotary movement of said shaft but does prevent said shaft from being turned rearwardly, and means for rendering said spring inoperative when it is desired to turn said shaft rearwardly.

5. A loose leaf binder, comprising a winding shaft, a stop or abutment device arranged in proximity to said shaft, and a coiled spring surrounding said shaft and combined with said abutment device in such a way that forward rotary movement of said shaft tends to open up the coils of said spring and pressure applied to said shaft in a direction to turn it rearwardly causes one or more coils of said spring to contract and exert sufficient frictional pressure on; said shaft ,to hold it against rearward rotary movement.

6. .A loose leaf binder, comprising a wind: ing shaft, a stop or abutment member ar ranged in proximity to said shaft, a coiled spring surrounding said shaft and combined with said abutment member insucha way that it effectively holdsv said shaft against rearward rotary movement, and means for rendering said spring inoperative when it is desired to turn the shaft rearwardly.

7. A loose leaf binder, comprising a wind ing shaft, a stop or abutment member arranged in proximity to said shaft, a coiled spring surrounding said shaft and com bined with said abutment member in such a way that it effectively holds said shaft againstrearward rotary ,movement,-and cooperating means on said spring and abutment member that are adapted to be brought into engagement with each other to render said spring inoperative when it is desiredto turn said shaft rearwardly.

8. A loose leaf binder, comprising a winding shaft, a stop or abutment member arranged in proximity to said shaft, a coiled spring surrounding said shaft and provided at one end with a lateral extension that engages said abutment member, means for connecting the opposite endof said spring to said abutment member, and a portion on said abutment member that is adapted to be brought into engagement with said extension so as to relieve the pressure of said spring on said shaft when it is desired to turn the shaft rearwardly.

9. A loose leaf binder, comprising a winding shaft, a' coiled spring surrounding said shaft, means combined with said spring for causing one or more coils of said spring to contract and thus tightly grip the winding shaft when the winding shaft is subjected to pressure in a direction tending to'turn it rearwardly, and means for rendering said spring inoperative to preventrotary movement of said shaft.

10. A loose leaf binder, comprising a winding shaft, a stop or abutment member arranged in proximity to said shaft, a coiled spring surrounding said shaft and'provided at one end with an extension that bears against said abutment member, means for rearwardly, an extension 0n said spring, a

eam o'r inclined face that is adapted to engage said extension to render the spring inoperative for holding' bhe shaftyand means I for compressing the spring so as to cause ing shaft, a spring surrounding said shaft and'arranged' in such a way 'thatit normally 10 holds said shaft iagainst" rearward rotary movement a device for exerting pressure on said spring in a direction to render" it inoperative for holding said shaft, and a wind mg said device-to engage said spring- ADOLPH RU Bi Ni V key provided With means for causing 15'

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