US950613A

US950613A - Loose-leaf binder.

Info

Publication number: US950613A
Application number: US51238009A
Authority: US
Inventors: James C Dawson
Original assignee: Sieber & Trussell Manufacturing Co
Current assignee: Sieber & Trussell Manufacturing Co
Priority date: 1909-08-11
Filing date: 1909-08-11
Publication date: 1910-03-01
Anticipated expiration: 1927-03-01

Description

J. C. DAWSON.

LOOSE LEAF BINDER.

APPLICATION HLBD AUG.11, 1909.

950,61 3. Patented Mar. 1. 1910.

. J i? y '4 59 116 226'/ lV/2.0 y @9i/2f,

2z ,Mw 4344 NITED STATES PATENT OFFICE.

JAMES C. DAWSON, OF WEBSTER GROVES, MISSOURI, ASSIGNOR TO SIEBER 8c TRUSSELL MANUFACTURING CO., A CORPORATION OF MISSOURI.

LOOSE-LEAF BINDER.

Specification of Letters Patent.

Patented Mar. 1, 1910.

Application filed August 11. 1909. Serial No. 512,380.

'1"0 all whom. it may concern:

Be it known that l, JAMES C. DawsoN, a citizen of the United States, and resident ot lVebster Groves, county ot' St. Louis, and State ot 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.

This invention relates to the type of loose leaf binders which comprises a pair of compression plates, filing posts or bars on which the leaves are impaled, and means 'for moving the plates toward and away from each other, the invention being addressed particularly to the controlling mechanism.

The object of the invention is to generally improve devices of this type, simplifying their construction and operation; and it consists in mechanism such as is hereinafter described and illustrated in the drawings, in which- Figure 1 is a detail plan view of the preferred form of binder showing the side plates as drawn together; Fig. 2 is a central longitudinal sectio-n of the same; Fig. 3 is a similar View to Fig. 1, the binder being expanded; and Fig. 4 is a detail perspective of one of the controlling levers illustrated in Figs. 1, 2 and 3.

The binder, as shown, comprises a pair of

side plates

15, 16, having

upstanding flanges

17, 18, in which the telescoping tiling

posts

19, 20, are set and between which the sheets to be bound are clamped when the binder is compressed.

Lugs

21, 22, formed on the outer faces of the

plates

15, 16, carry pivot rods 28, 24, to which the sides or cover plates (not shown) of the binder may be attached.

A back plate 25 overlaps the lower edges of the

plates

15, 16, and carries the controlling mechanism. The back plate is provided with

upstanding end flanges

26, 27, the ends of which overlap

end flanges

28, 29, of the side plates for closing the top and bottom of the binder.

The controlling mechanism comprises a plurality of levers pivoted upon the back plate and slidingly engaging pins carried by the side plates, and a screw-rod journaled in suitable bearings disposed along the median line of the back plate and carrying one or more nuts having a cam engaged with the levers.

In the preferred form of construction there are present two pairs of levers, designated, respectively, 30, 31, 32 and 53, and pivoted, as shown, respectively, at 34, 35, 86 and 37, to bosses 38, 39, rising from the back plate 25 adjacent its longitlulinal center, and

plates

40, 41, secured to the bosses by the screws which forni the pivots oi the levers. rl`he controlling levers oiE cach pair project toward the ends of the binder, and each is provided with a curved slot 42 adjacent its end for receiving a pin 43 set-ting through a slotted boss 44 formed in the inner wall of the side plate, the lever being housed within the slot of the boss. 'lhe connection of the several levers to the side plates heilig alike, but one of them is described.

Each of the levers, as more plainly shown in Fig. 4, is provided with a lateral extension 45, which projects across the longitudinal median line of the binder and is provided with a cam slot 46, which is oblique thereto. The lateral extensions 45 of the two levers forming a pair overlap, their

cam slots

46, 48, intersecting, as more plainly shown in Figs. 1 and 3.

The actuating screw-rod 49 is journaled in bosses, as 50, rising from the back plaie 25 adjacent its ends and carrying

cap plates

51, 52, secured thereto by screws. A collar 53, iXed upon the rod 49, lies between the bosses 38, 39, whereby the rod is held against longitudinal movement. This rod is provided with right and left screw-

threads

54, 55, located, respectively, at opposite sides of the bosses 38, 89, and upon these threaded portions there run a pair

oit nuts

56, 57, each of which carries an

upstanding stud

58, 59, engaging the

cam slots

46, 48, of the two pairs of controlling levers. As each of these studs passes through the cam slots at the points at which they intersect, they are thereby held against rotative movement relatively as to the rod 49, and hence as the rod is turned by means of a key (not shown) applied to its squared end 60, the

nuts

56, 57, travellongitndinally as to the rod and in opposite directions, the studs necessarily traveling along the cam slots of the levers, the latter are thus caused to swing about their pivots, thereby moving the side plates of the binder toward or away from each other. The end plate 26 is apertured, as indicated at (3l, to provide accessv to the squared end of the screw-rod.

I claim as my invention4 l. In a loose leaf binder, in combination, a back plate, a side plate movable laterally, an actuating rod mounted longitudinally on the back plate, a lever pivoted to one of such members and engaging the other' and having a cam slot extending obliquely across the actuating rod, and a stud engaging the slot and mounted in line with and movable by the rod.

2. In a loose leaf binder, in combination, a baal; plate, a pair of side plates movable laterally, a pair of levers pivoted to the back plate and each engaging one of the side plates, the two levers having overlapping lateral extensions with intersecting cam slots, a controlling rod mounted on the back plate, a stud engaging the cam slots of the two levers and movable longitudinally of the back plate by means of the rod.

3. In a' loose leaf binder, in combination,

a back plate, a threaded rod journaled thereon, a laterally-movable side plate, a lever pivoted to the back plate and engaging the side plate and having a cam slot extending obliquely across the rod, a nut running on the rod and carrying a stud engaging the cam slot. Y

t. In a loose leaf binder, in combination, a back plate, a threaded rod journaled thereon, a pair of laterally movable side plates, a pair of levers pivoted to the back plate and each engaging one of the side plates, such levers having overlapping portions with intersecting cam slots, a nut running on the rod, and a stud carried by the nut and engaging the two cam slots.

5. In a loose leaf binder, in combination, a back plate, a rod journaled thereon and having oppositely inclined threads adjacent its ends, a pair of laterally movable side plates, two pairs of levers pivoted to the back plate and extending, respectively, toward the ends of the side plates and being engaged therewith, the members of each pair having overlapping portions provided with intersecting cam slots, and nuts running on the threaded portion of the rod and each carrying a stud engaging the cam slots of the contiguous levers.

JAMES C. DMWSON.

lVitnesses F. lV. RISQUE, lV. S. OLIVER.