US1331556A - Cover-support - Google Patents

Description

B. B. BLOOD.

COVER SUPPORT.

APPLICATION FILED JULY 22, I9X8,

Patented Feb. 24, 1920.

. ITnFen or Q fl. MM! VZM mess nnrrnn STATES PATENT ornron.

BURR B. BLOOD, OF CHICAGO, ILLINOIS, ASSIGNOB F ONE-HALF TO GEORGE HEIDMAN AND ONE-HALF T0 NORMAN A; STREET, BOTH. OF CHICAGO, ILLI- NOIS.

COVER-SUPPQRT.

Application filed July 22, 1918.

To all whom it may concern:

. Be it known that I, Bonn B. Bnoon, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and use ful Improvements in Cover.- Supports, of which the following is a description, refer 'ence being had to the accompanying drawing, which forms a part of my specification. My invention relates more especially to a support for the lid or cover of a phonograph cabinet which is usually pivotally secured or hinged at one side thereof so as to swing vertically; the object of the invention being to provide a construction wherein the supporting position will be automatically assumed when the lid or cover has been raised or lifted into a tilted position.

My invention also contemplates a construction wherein a predetermined amount of pressure on the cover or lid, when the same is inraised or tilted position, will force the support out of supporting position and permit the cover or lid to remain in closed position until the same has been again manually lifted to a proper extent; the constructionbeing such, however. that an increased frictional or holding relation betweenthe elements of the support is 0] tained as the cover or lid is being lowered, so that a sudden dropping and arring closure of the cover will be prevented.

The operation and advantages of my improved cover support will be more readily comprehended from the following detailed description of the accompanying drawing, wherein I Figure 1 is a vertical sectional view of a portion of a cover or lid and the upper part of a phonograph cabinet, illustrating my cover support in side elevation; the positioning of the support when the cover or lid is down or closed being shown in full lines, while the supporting position of the device, with the cover or lid tilted or raised, is shown in dotted lines.

Fig. 2 is a cross sectional view taken on the line 2-2 of Fig. 1 looking in the direction of the arrows. I

In the particular exemplification of the invention, as disclosed in the drawing, the support is shown secured to one of the side panels or walls of a'phonograph cabinet, indicated at 5; the cabinet being provided with the usual type of lid or cover 6 which Specification of Letters Patent.

Patented Feb. 24, 1920.

Serial No. 246,948.

is hinged at one end or side, at the point 7, i

to the cabinet proper so as to swing vertically; the cabinet being provided with the usual inner top or partition 8 above which the usual turn-table is disposed.

The support comprises a substantially sector-shape plate or cam-acting member 9, preferably of sheet metal, adapted to be firmly secured to the side wall or panel of the cabinet 5 at a suitable point beneath the inner top 8. The plate or member 9 is preferably mounted or secured in slight spaced relation with the side wall of the cabinet, as shown in Fig. 2; being secured by means of suitable screws or bolts 10, with one edge of the plate preferably disposed substantially in a horizontal plane and therefore with the curved or arcuate edge disposed upward from said horizontal plane.

Pivotally secured at the apex portion of the plate 9, to-wit at the point 11, is a link or arm 12 of a length to adapt it preferably to extend slightly beyond the arcuate side of the plate, as shown in the drawing; the pivotal point 11 being such that the link or arm 12 may oscillate vertically, as shown in dotted lines in Fig. 1.

Slidably mounted on link or arm 12 is a sleeve member 13, the side whereof adja cent to member or plate 9 is provided with an extension or roller 14: which is adapted to ride on the arcuate surface 15 of plate or member, 9.

Secured to the sleeve member 18, by means of a suitable pin or post 16, is a suit able retracting spring 17,- the other end whereof is shown secured about the pin or post 11 which provides a pivotal point for the link or arm 12. As is evident from this construction, the spring 17 exerts a constant pull on the sleeve 13 toward the pivotal point 11 of arm 12, with the result that the extension or roller 14 is kept in firm contact with the arcuate surface 15 of plate 9.

Pivotally secured to the outer end of arm 12, beyond the slidably mounted member or sleeve 13, is a link or arm 18, the opposite end whereof is preferably pivoted at 19 to a suitable bracket member or lug 20 which is secured to the inside of the cover or lid 6.

The spring 17 is of such length and tension that it will constantly exert apulling action on the sleeve or slidable member 13 and therefore when the lid is in the raised position indicated in dotted lines in Fig. 1,

namely at a time when the sleeve with its roller 14 will have been moved to the upper end of cam plate 9 at which time the pull-.

ing action of spring 17 on the sleeve 13 will be in a downward direction, which causes roller 14 to be firmly held on the arcuate surface of cam-plate 9. The tension of the spring 17 at this point will be sufficient to counteract the weight or downward pressure of the cover or lid 6, with the result that the frictional relation of roller 14 with camplate 9 will hold the cover or lid against gravity or accidental downward movement. In order to prevent the supporting mechanism being moved too far, the plate 9 may be provided with a lip 21, as shown in Fig.1, which provides a stop against further movement of roller 14, and therefore against too far movement of arm or link12 relative to its pivotal connection with arm or link 18.

The cam-plate 9 is preferably of gradually increasing radius from the pivotal point 11, toward the lower end of the plate,

so that spring 17 will thereby be placed'under greater or increasing tension through the movement of sleeve 13 coacting with the cam-surface, as the cover or lid is being forced downward into the closed position shown in full lines in Fig. 1. With the increased tension or pull of the spring thus induced, the cover or lid 6 will be prevented from suddenly dropping into closed position, or, in other words, closing with a jar as would otherwise be the case from the relation of link or arm 18 to link or arm 12 resulting during the closing movement of the lid. It is evident also that when the cover or lid is in complete closed position, the pull exerted by spring 17 will be substantially in direct horizontal alinement with' pivotal point 11 and therefore will not intend to automatically raise or lift the cover 6. As is evident from the construction shown and described, a cover support is provided which will not only tend to assist the operator in lifting the cover or lid 6, but which will also maintain the cover or lid in its maximum raised position until sufficient downward pressure is applied on the cover or lid by the operator. i

The installation of my improved cover support may be readily accomplished by simply positioning the plate 9 on the inner side wall or panel of the cabinet at a distance removed from the top 8 of the cabinet, commensurate with the length of link or arm 18, so that link or arm 12 will be disposed in substantially horizontal position when the cover or lid 6 is in closed position, as shown in full lines in Fig. 1.

v I have shown and described what I believe to be the simplest adaptation of my invention, but certain modifications may be made in construction without, however, de parting from the spirit of my invention.

'What I wish to cover by Letters Patent is Q I 1. A cover support, comprising a pair of links pivotally secured together atone end, with the other end of one link pivotally se-, cured to the cover while the opposite end of the other'link is pivotally secured to the cabinet to which "the cover is :applied, the pivotal connections being such that the links will normally extend substantially at right angles to each other. and permit vertical movement, an arcuate plate securedto the I cabinet adjacent the path of vertical movement of the link secured tothe cabinet and disposed parallel therewith, with the dis throughout the vertical movement-- of said link, whereby the frictional relation between the sleeve'and plate is increased as the cover moves to closed position. V

2. A cover support, comprising an arcuate plate adapted to be securedto the cabinet, the arcuate surface of the plate terminating in a projection orlip, a link pivotally secured to the cabinet at a point removed from the arcuate surface of the plate and substantially in horizontal alinement with the lower end 'of said arcuate surface, the plate being so arranged that its arcuate surface is disposed at a'gradually increasing distance from the fixed; "pivotal point of said link as it' approaches the horizontal plane of said pivotal point, a second-link pivotally secured at one end to the free end of the first link while the other end of the second link ispivotally secured to the cover, a sleeve-member slidably mounted on the first link and provided with a roller adapted to ride on the arcuate surface of said-plate, and a spring secured at the pivotal point of the first link and to said sleeve-member whereby the latter is drawn toward the fixed pivotal point of the first link and the roller carried thereby maintained in frictional relation with the arcuate' plate, with-the'frictional relation increasing as the cover approaches' closed position. I

'- BURR B.BLOOD.

Witnesses: V V

GEORGE 'HEIDMAN, F. A. FnoREiL.

Images