US986910A

US986910A - Loose-leaf binder.

Info

Publication number: US986910A
Application number: US58890910A
Authority: US
Inventors: James C Dawson; Thomas E Heeter
Original assignee: Sieber & Trussell Manufacturing Co
Current assignee: Sieber & Trussell Manufacturing Co
Priority date: 1910-10-24
Filing date: 1910-10-24
Publication date: 1911-03-14
Anticipated expiration: 1928-03-14

Description

J. O. DAWSON & T. B. HEETBR; Loosn LEAF 11111111111.

APPLIOATION FILED OOT.24, 1910.

986,910, Patented Ma1-.14,1911.

R 2 "I 7? r12 27249,; C ZbM U I an d as) flomasfrieef'n small books of the kind commonly UNITED STATES PATENT OFFICE.

JAMES C. DAWSON, OF WEBSTER GROVES, AND THOMAS E. HEETER, OF ST. LOUIS, MISSOURI, ASSIGNORS T0 SIEBELR & TRUSSELL MANUFACTURING COMPANY, A

QORPOBATION OF MISSOURI.

LOOSE-LEAF BINDER.

Specification of Letters Patent.

Application filed October 24, 1910. Serial No. 588,909.

To all whom it may concern:

Be it known that we, JAMES C. DAWSON and THOMAS E. Hnn'rnn, citizens of the United States, and residents, respectively, of Webster Groves, county of St. Louis, State of Missouri, and of the city of St. Louis, State of Missouri, have invented certain new and useful Improvements in Loose-Leaf Binders, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to that type of binders in which the sheet-holding prongs are substantially semi-circular in form and are so mounted upon the back of the cover that they may be held in either the open or closed position by the action of a s ring acting upon a pair of plates to whic the prongs are directly aliixed.

The object of the invention is to generally improve upon binders of this type; to provide a more secure and stable construction; improved means for opening the prongs, and im roved means for securing the binder mec ianism to the back of the cover.

The invention consists in a structuresueh asis hereinafter described, and as illustrated in the accompanying drawings, in Which Figure 1 is a detail pers ective of the binder, one of the covers eing thrown back. Fig. 2 is a plan view of the binder mechanism removed from the cover and being shown pa'rtly in section; Fig. 3 is a longitudinal central sectional view of the binder mechanism as applied to the back of the cover;'Fig.-4 is a sectional detail on the line 4-4 of Fig; 3; Fig. 5 is a detail in perspective of the binder mechanism, some ofthe parts being removed; Fi 6 is a detail in perspective of the plate Tor securing the binder mechanism ,to the cover; Fig. 7 is a detail in perspective of a pair of impaling prongs;- Fig. 8 shows a detail of the impaling prongs, embodying a modified form of construction; and Fig. 9 is a detail of the prong-carrying plates with the prongs removed.

The binder is especially adapfled for own in the art as price books. The book corriprises a pair of

cover plates

10, 11, which may be of any suitable material, such as leather, cloth, or board, being here shown as limp, the two cover plates being united by a flexible back 12.

The binder mechanism comprises a spring plate 13 transversely bowed and having its side edges inturned, as shown at 14, 15, to form channels for receiving the outer edges of a pair of prong-carrying

plates

16, 17 the inner edges of which are adjacent and substantially in contact. The combined width of the

plates

16, 17, is greater than the normal distance between the channels, at the margins of the plate 13 within which they rest.

Impaling prongs arranged in pairs, as many pairs being employed as desired, are carried by the

plates

16, 17. These

prongs

18, 19, are semi-circular in form, and the members of each pair are pivoted together, as shown at 20, their free ends being notched so as to mate together, as shown at 21. Each prong is notched in its outer face, and near its heel, as shown at 22, to receive the edge of the carrying plate upon which it is mounted, this notch extendin across the outer face of the prong and along its side faces toward its heel. The

plates

16, 17, are notched at their inner edges, as shown at 23, the width of the notch being such that its lateral margins enter the side portions of the notch 22 in the prong, the transverse margin of this notch receiving the inner margin of the notch 23. The joint thus formed between the prong and the plate makes a close fit, the prong being held ri 'dly upon the plate, the engagement 0 the lateral margins of the notch 23 with the lateral extensions of the notch 22 materially contributing to the stability with which they prong is held in place. The pivot pin 24 uniting the prongs of each pair preferably extends some distance beyond the prong members in each direction, its outer ends being bent downwardly and flattened somewhat, as shown at 25. The

plates

16, 17, are recessed, as shown at 26, to provide clearance for the straight portions of the. pivot ter.ly1ng below the inner surfaces of the plates.

The

prongs

18, 19, are swung on their pivots by the rocking of the

plates

16, 17,

within t 1e marginal channels of the spring late 13. When the prongs are closed the inner edges of the carrying plates incline inwardly toward the bowed spring plate,

in 24; the flattened ends of the lat- 7 associated with each of the

cap plates

27, 28,:

shown in solid lines in Fig. 4. When the prongs are open the carrying plates incline outwardly, as shown in dottedlines in the same'figure. The flattened ends of the pivots 24: limit the outward movement of the

plates

16 and 17.

Caps

27, 28, are fitted upon the ends of the spring platef13, and secured thereto by any suitable means, such as lugs upon one of the members passing through apertures in the other, each cap having an instanding flange 29 which projects slightly over the ends of the

carrying plates

16, 17, and may serve as means for limiting their upward movement. An L-shaped lifting lever 30is one of its arms 31 projecting through an aperture therein, its other arm normally extending upwardly against the face of the cap. A leaf spring 32 is rigidly secfired at one end to the spring plate 13, its free end bearing against the upper face of the in standing arm 31 of the lever, thereby holding the outer arm of the lever upright, as

of the binder. of inwardly offset and longitudinally diplainly shown in the drawing. This leafspring may be secured to the member 13 in any suitable manner; as shown, this is accomplished by striking up from such member a lip 43 which enters a slot in the spring,

and is then folded or clenched down. Pres-v sure upon the arm 31 of the lever to throw it backwardly or outwardly forces the spring 32 upwardly against the

plates

16 and 17, and raises their inner edges for the purpose of separating the prongs. When the pressure upon the lever arm is relieved, the spring returns it to its normal position. The prongs or arches are closed by pressure upon the members of any pair thereof.

A base plate 33 is bound into theback 12 This plate has a plurality rected

lugs

34, 35, 36, preferably formed by being punched up from the stock ofthe plate. The spring plate 13 is apertured to receive these lugs, as shown.- at 3'2,v 38, 39. The binder mechanism is. secured to this back plate by fitting it thereto in such manner that the

lugs

34, 35, 36, enter the apertures 37 38, 39, respectively, the spring plate then being moved longitudinally to the position shown in Fig. *3. A spri tongue 40 is struck up from the body of tli and has an upturnedend 41, adapted to enter one of the apertures, as 39, inthe plate 13 when the latter is moved to the position shown in Fig. 3, thereby locking it perma- 'nently in this position.

Should it be desired to remove the binding mechanism from the cover, the

plates

16, 17, are first drawn out endwise from the plate 13, giving access to the locking mechanism just described. By forcing. downwardly the spring ton e 40 the plate 13 may be moved longitudi nally to disengage e plate 33,

eeemo it from the securing lugs. As shown, and preferably, the-spring tongue 40 is covered by one of the springs 31, and in order to provide access to it for the purpose'of disengagement, the spring 32 may be provided with an aperture 512 through which a tool maybe inserted. j p

In lieu of the elongated piv ots\25 01 uniting the mating prongs, a stud pivot43 may be struck up from the stock of one of the prongs, an aperture being formed in the other to receive 1t. When this construction isfollowed the opening movement of the prongs is limited either by contact of the

plates

16, 17, with the instanding flanges of the

cups

27,28, or the joints of the prongs may be shouldered, the shoulders of the twoprongs meeting when the prongs are opened to the desired extent.

We claim as our invention 1. In a loose leaf binder, in combination,"

a pair of plates arranged edge to edge and notched in their adjacent edges, mating prongs carried, respectively; by the plates and secured thereto by means of notches adj acent their heel portions, such notches crossing the outer faces of the prongs and extending laterally toward their heels and tightly receiving the marginal edges of the plate notches, a spring urging the plates toward each other, and means for limiting the inclination of the plates to separate-the meeting ends of the prongs.

2. In a loose leaf binder, in combination, a pair of plates arranged edge to edge and notched in their adjacent edges, mating prongs carried, respectively, by the plates and secured thereto by means of notches adjacent their heel portions, such notches crossing the outer faces of the prongs and ex-.

tending laterally toward their heels and tightly receiving the marginal edges of'the plate notches,'a spring urging the plates toward each other, apivot pin uniting the heels of cooperating prongs and being prolonged beyond the prongs and having an end inclined downwardly and engageable with the; faces of the plates to limit their upward inclination. i

3. In a loose leaf binder, in combination, a pair of plates arranged edge to edge and lll notched in their adjacent edges, mating prongs carried respectively by the plates and secured thereto by means of notches ad-- jacent their heel portions, such notches crossing the outer'faces of'the prongs and extending laterally toward their heels and tightly receiving the marginal edges ofthe plate notches, a spring urging the plates toward each other, a pivot pin uniting the heels of cooperating prongs and being prolonged beyond the prongs and having an end inclined downwardly and flattened and engageable with the; faces of the plates to limit their upward inclination.

4. In a loose leaf binder, in combination, a pair of plates arranged edge to edge and notched in their adjacent edges, mating prongs carried respectively by the plates and secured thereto by means of notches adj acent their heel portions, such notches crossing the outer faces of the prongs and extending laterally toward their heels and tightly receiving the marginal edges of the plate notches, a bowed spring bearing upon the outer edges of the plates, and means for limiting the inclination of the plates to sep arate the meeting ends of the prongs.

5. In a loose leaf binder, in combination, a pair of plates arranged edge to edge and notched in their adjacent edges, mating prongs carried respectively by the plates and secured thereto by means of notches adjacent their heel portions, such notches crossing the outer faces of the prongs and extending laterally toward their heels and tightly receiving the marginal edges of. the plate notches, a bowed spring plate having its edges bearing upon the outer edges of the first-named plates, an apertured cap fitted to the end of the spring plate, an L-shaped lever having one of its arms projecting through the aperture of the cap, a spring urging such lever arm toward the spring plate, and means for limiting the inclination of the plates to separate the meeting ends of the prongs.

6. In a loose leaf binder, in combination, a pair of plates arranged edge to edge and notched in their ad'acent edges,- mating prongs carried respectively by the plates and secured thereto by means of notches adjacent their heel portions, s'uch notches crossing the outer faces of the prongs and extending laterally toward their heels and tightly receiving the marginal edges of the plate notches, abowed spring plate having its edges hearing upon-the outer edges of the first-named plates, an apertured cap fitted t0 the end of the spring plate, an L-sha ed lever having one of its arms projecting t rough the aperture of the cap, a spring urging such lever arm toward the sprln plate, a leaf spring attached to the bowe spring and bearing upon the lever arm, and means for limiting the inclination of the plates to separate the meeting ends of the prongs.

7. In a loose leaf binder, in combination, a base plate havingupstanding longitudinally-projecting lugs, a bowed spring plate apertured to engage the lugs, a detent for holding the two plates in en holdin "agement, and leaf-carrying means supported by the spring late. p 8. In a loose leaf binder, in combination, abase plate having upstanding longitudinally projecting lugs, a bowed spring plate apertured -to engage the lugs, a detent for the two plates in engagement, -a pair 0 plates arranged edge to edge and having their outer edges engaged by the marginal portions of the spring plate, and mating prongs carried by the pair of plates. 9. In a loose leaf binder, in combination, a base plate having upstanding longitudinally projecting lugs, a bowed spring plate apertured to engage the lugs, a detent for holding the two plates in engagement, a pair of plates arranged edge to edge and having their outer edges engaged by the marginal portions of the spring plate, mating prongs carried by the pair of plates, a lever mounted on the spring plate and acting upon the inner faces of 'the air of plates.

10. In a loose eaf binder, in combination, a base plate having upstanding longitudinally projecting lugs, a bowed spring plate apertured to en age the lugs, a detent for holding the two plates in engagement, :1 pair of lates arranged edge to edge and having t eir outer edges engaged by the marginal'portions of the spring plate, mating prongs carried by the pair of plates, a lever mounted on the spring plate and acting upon the inner faces of the pair of plates, and a leaf spring secured to the bowed late and projecting between the lever and the pair of plates.

11. In a loose leaf binder, in combination, a base plate having upstanding and longitudinally projecting lugs and an upstanding spring tongue, a bowed spring plate apertured to receive the lugs and spring tongue, a pair of plates arranged edge to edge and having their outer edges engaged by the marginal portions of the spring plate, mating prongs carried by thepair of plates, alever carried by the bowed plate for urging the pair of plates upwardly, and a leaf spring secured to the bowed spring plate and bearing upon the lever to retract it, such leaf spring coverin the spring tongue.

-- J ES C. DAWSON.

THOMAS E. HEETER. Witnesses:

F. W. BISQUE, FRED Corrman.