US147638A - Improvement in umbrellas - Google Patents

Description

c. HARRISON @L w. PEAn'soN.

Umbrellas.

Patented Feb. 17,1I874.

nl] w.

mvENToRs WITNESSES U'rnn STATES PATENT vQrrreno OHARLESHARRISON AND WILLIAM PEARSON, OF LONDON, ENGLAND.

IMPROVEMENT IN UMBRLLAS.

Specification forming part of Letters Patent No. 147,638, dated February 17, 1874; application filed June 28, 18.73.

To all whom it may concern:

Be it known that we, CHARLES HARRISON and WILLIAM PEARSON, both of Old Change, in the city of London, England, have invented certain Improvements in the Construction of Frames for Umbrellas, Parasols, and Sunshades, of which the' following is a specification:

Our' said invention consists in the construetion of a compound colla-r, and in the attachment of the same to the cylindrical tube, technically known as the runnen and forming that part of the frame of an umbrella, parasol, or sunshade to which the stretchers77 are attached, and which, by the agency ot' springs, (as ordinarily constructed,) retains the article in an open or closed state. By the use of the before-mentioned compound collar the necessity for the use of springs is altogether avoided, while the ribs and stretchers of the article can be iirmly retained in any desired position.

The compound collar is formed of brass or other suitable metal 5 and consists of two parts, each of which has an aperture bored or formed therein, such apertures being circular, but placed eccentrically with reference to the peripheries ofthe respective parts. One part of the collar is fixed to the end of the runner, opposite to that at whichthe stretehers are attached, the external edge or periphery thereof being furnished with a screw-thread. The other part ofthe collar is in the form of a cap, in the interior of which is a screw-thread capable of gearing into that formed on the exterior of the fixed portion of the collar. By actuating the cap by means of the screwthreads, the circular aperture therein can be brought to coincide with that in the fixed portion of the collar attached to the runner,

when the latter will be free to move up or down the stiek of the umbrella, parasol, or sunshade to which itV is applied, or the said aperture may be brought into an eccentric position with regard to that in the fixed portion of the colla-r, over a part of which the edge of the aperture in the cap will pass and press against the stick of the article, thus holding the frame firmly in position until rel leased by turning the cap in the opposite direction. A.

The stick may have grooves formedor recessed therein for the reception of the edge of the cap, or grooved or recessed metallic or other plates may be inserted in the stick at any desired parts for that purpose.

In order to prevent the cap `from being rotated too far, or accidentally detached, a groove is formed in the face or in the periphery of the fixed portion of the collar, in which groove works a pin or set-screw passed through the cap, thus operating as a stop.

Although we prefer the compound collar to be constructed with screw-threads thereon, as hereinbefore described, such screw-threads may be dispensed with, and the several parts of the collar formed with smooth surfaces provided with slots and stops, as will be well understood, the principle and mode of action remaining substantially the same.

Te will now proceed to refer to the annexed drawings, from which the nature of our said invention will be more clearly understood.

Figure l represents a portion ot" the stick of an umbrella, and shows the runner at the bottom groove, as when the umbrella is closed. Fig. 2 is a section through the line A B in Fig. l.

In these figures the same letters indicate similar parts.

a is the stick a', the upper plate thereon, with a groove for the reception of the movable portion of the collar. b is the iixed portion of the compound collar, and c the movable portion or cap thereof.

Fig. 3 is an end view of the xcd portion of the collar; and Fig. et is a view of the com pound collar, showing the eccentric movement before referred to In these ligures the screw arrangement hereinbefore described is shown as being used; but the modiications above referred to will be clearly understood by persons conversant with mechanism :ind inchnniud' cnn- 1' rivzmoes.

Having thus dciincd :1nd ascertained the nature of our said invention, and in what nimmer the same is to be pcrfbrnied, we would observe in conclusion that what we consider 11m-'e1 and original, and therefore claim :is 00nstituting our sind invention, is

An nnibrelii111n11&r provided with the 00mpound collar I) c, constructedand arranged :is

and-fm' the purpose hereinbefore set forth.

CHARLES HARRISON. NVM. PEARSON.

\\"ifnvsses ('-Eo. F. VAUGHAN,

54 Chancery Lane, London. J. B. WYNN,

21 Royal Exchange, London.

Images