US1531045A - Drawing board and trestle therefor - Google Patents

Description

March 24, 1925. 1,531,045

C. L. SWAISGOOD DRAWING. 'BOARD AND 'msswm THEREFOR Filed April 6. 1922 mvmrox CLSwAlseoo ATTORN Patented Mar. 24, 1925.

UNITED STATES CLARENCE L. swAisGoonQor CLEVELAND, OHIO.

nnAwrne BOARD Ann rnnsrnn THEREFOR.

. Application filed April 6,

'1 all whom it may concern.

Be it known that I, CLARENCE L. SwAissoon, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in DrawingBoards and Trestles Therefor, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings. i

This invention relates to the class of su -j ports and especially to devices of this nature which are used for trestles, tables, and portable scaffolds as employed by carpenters, paper-hangers, plasterers, decorators,'drafts= men, etc. The objects of the invention are the provision of a cheap and simple device of this character which can be set up 'on an uneven and irregular floor and yet remain 1 perfectly solid; the provision of a particularly cheap and simple fitting for construct ing a device of this character with a minimum of time or expense; the provision of a new and improved construction of drafting" board or adjustable table; while further objects and advantagesof my invention will become apparent as the description proceeds.

In the drawings accompanying and form ing a part of this application Fig. 1 is a perspectiveview of a drafting table embodying my improvements; Fig. 2 is a plan view of one member of one of the leg fittings; Fig. 3 is a front elevation and Fig. 4: an endelevation of a simple trestle embodying my improvements; and Fig. 5 is a central sectional view through the middle of a drafting table shown in Fig. 1.

Describing the parts by reference characters, 1 represents the top member of a horse or trestle consisting preferably of a piece of ordinary scantling having slanting holes bored into one edge adjacent its ends into which are tightly driven. the studs 2-2. 3 and 4 represent the mating members of the leg clamps, one of which members is shown in Fig. 2. It consists of a triangular, hol low, metal, casting having a substantially fiat side portion 6 terminating in a marginal flange 7, this flange being interrupted on one side to produce three notches 8, 9,. and 10, and the point of the member which is opposite the notched fiange being formed for the reception of one of the studs-2 which also extends through the central notch of the flange opposite thereto as shown in Fig. 2. The interior of the member is formed with 1922. Serial no. 550,046.

suitable projections 12 co-operating with the notches Sand 9 to define seats or channels for thediv'erging legs 13.13 and with studs 14 for limiting the inward movement of said legs. The-sides Gare formed with registering apertures 15 for the reception of suit able bolts 16 whereby the, 1 members are clamped together upon the legs, and one member of each pairis provided witha set screw'l7 for fixing the position of the stud 2 therein, Each of the members is also preferably provided with suitable tongues 18 adapted toeng-age the other member to hold the parts in register. I V

These members are preferably made exactly similar and can be cast complete ready for use excepting for the tapping of the set i screw hole, and even this can be accomphshedby casting a nut in place. A'horse' or trestle made in thisway is much cheaper than one made all'of wood and can be put together in a very fewminutes. Besides it can always be set firm and even irregularities of the supporting surface can be compensated byrotating the fittings about the respective studs so as to bring all the legs into bearing, this being permitted by the angularity of the studs. The adjustability of these leg-fittings relatively to the studs also enables successive trestles to be brought into the same'plane which is desirable in case the same are to be used to support a table or platform. I

In addition I have shown a single trestle as arranged to support adrawin board. 20 which is hinged thereto at 21. l epending from the scant-ling 1 substantially at its middle point is a third stud 22 and pivoted to the bottom of the board adjacent one edge is a rod 23 adjustably clamped to the stud 22 by means of a thumb-screw 24; and slidable fitting 25. This produces a drawing board of maximum simplicity and convenience. When not in use it can be folded into a sub stantially fiat form in which it takes up a minimum. of room; and the adjustability of the legs enables it to be set firmly upon any 1 uneven surface.

It will be understood that do not re strict myself to the details herein shown except as the same are specifically recited in my claims.

Having thus described my invention what I of rigidstuds projecting downwardly. therefrom at diverging angles, onean'ean each; endiii thereof, a fitting adjustably clamped to each.

of the studs, each fitting having therein av pair of diverging cylindricalsocketslocated;

one on each side of the stu.d,.an d legs rigidly: secured in said sockets, said'fittings being longitudinally and angular-1y adjustable relatively to their respective studs.

As an article of, manufacture; and! sale,

a fitting for the: purpose described com prising a member having, a channel? therein,- adapted fora the reception of; avstudand: a pair of; flaring channels located? one at eaclr.

side'ot'; the" first channel, and: having; their: axes diverging tlIG-BBf-IOHnQSELId lastlchannels adaptedfor. the reception of: legs, means for: limiting-the insertloniof SitlCl: legs lntoisald,

fitting, and ineaiisfon clamping} said'ffitting3 near the ends of. said" memberand, flaring;

outwardlyand' the third stud being int'ers mediate the two, a-. pain of. flaring legs,

clamped to each of the terminal1 studs; and adjustable relatively theretoboth, angulanly and longitudinally, a. drawing. board. hinged to: the side of saidmember which is oppositesaid: studs,- an' adjusting rod pivoted. to: said, drawing-board: atv a: point. IQIHOVBdafTOHl its hinges and passing: close beside; the: third stud, 'and% an. adfiustable. clamp securing said last stud: androd: together:

4. In a. device oi? the character described,

:a body, a first pair of legs, a second pair of legs, and means whereby said body is supported by said pairs of legs in a manner to permit rotation of each pair of legs inclependently of the other pair of legs and about an axis disposed at an angle to the vertical. y

5. In a,- device of the character described, a body, a first pair of legs, a second pair of legs, and means whereby said. body is supported by said pairs of legs in: a manner to permit rotation of each pair of legs independently of the other pair of legs and, about an axisJdi-sposed in the plane of that pair of legs and at. an angleto the vertical.

In-a device of the character described, a body, a first pairo-f legs, a second pair of legs, and means whereby said body is supported by said pairs of legs in a manner to permit rotation of each pair of legs independently of the other pair-of legs and about anaxis sodisposed that the two axes of the two pairs of legs lie in a single plane and, converge.

Z. In a, device of the character described, a body,, a first pair of legs, asecondcpair of legs, and means whereby said body is supportedtby said pairs of. legs in a manner to permitbodilyv movementoi onepair of legs toward and from said body and independent oi said other pair. of legs and to also permit rotation: oi? each; pair otlegs independently ofthe'other. pair of-legs and about an axis disposed. at an angle tothe vertical.

In testimony whereof, I hereunto aflix my signature:

CLARENCE L. swarseoon.

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