US 1775185 A
Description (OCR text may contain errors)
' p 9, 1930. c. B. ALDRICH 1,775,185
MORTAR BOARD CAP Filed July 1, 1929 C jwenzolgwag /a/rencefiwh a. .M "W/ Patented Sept. 9, 1930 PATENT OFFICE CLARENCE B. ALDRICH, OF CHICAGO, ILLINOIS MORTAR-BOARD on? Application filed July 1, 1929.- Serial No. 375,267.
My invention relates to improvements in mortar board caps consisting of the usual flat rectangular top and a crown.
. Difficulty has been encountered heretofore with such caps in that the flat top does not remain flat over extended periods of time, but curls or warps.
The objects of the present invention are to provide an improved cap of this character,
the top of which will remain flat, one which will stand comparatively rough handling although of light weight, one in which the corners will not bend or break and which will not cut through readily when the corners are struck, as by dropping the hat, and one in which the flat top is substantially waterproof.
Other objects and advantages will be apparent from the more detailed description hereinafter given of the preferred embodi ment of the invention.
In the drawings Fig. 1 is a perspective view of a finished cap embodying these improvements.
Fig. 2 is an enlarged plan view of the corthe top.
Fig. 3 is an enlarged plan view of a corner thereof. a
Fig. 4 is an end elevation of a reenforcing metal channel member.
Fig. 5 is a partial end view of the reenforced corrugated board.
Fig. 6 is a perspective view of the same showing it partially slipped into a felt cover, and
Fig. 7 is a plan view of the same with the cover sewed together.
The complete cap consists of a mortar board top 1, a stiff crown 2, and a tassel 3.
The top is stiffened by a sheet of corrugated board 4, having edges reenforced by channel members 5 of thin light metal, such as aluminum, for example. The end of each channel overlaps the adjacent end of the channel at right angles thereto, as shown at Fig. 2, and the overlapping edges are soldered as shown at 6, thus preventing. the metal from pulling apart at the edges and insuring rigidity. Furthermore, if the upper flange of one channel overliesthe upper flange of rugated board and associated parts forming the adjacent channel, the lower flange of said first mentioned channel will underlie the corresponding lower flange of the second mentioned channel, that is, at eachcorner one flange end of each channel member is disposed between the ends of the adjacent channel member, as illustrated in Fig. 5. With this arrangement a very stiff, light reenforcing board is provided, which board is then placed in a press and reduced somewhat in thickness without crushing it, this operation also insuring smooth upper and lower surfaces. j
The corners are protected by gummed cloth or paper 7, as shown in Figs. 3 and 6, for example. This is done to prevent the corners from cutting the cloth of the finished cap when the edgeof the cap strikes the floor, for example. Both sides of the corrugated board are then shellacked and a piece of cloth 8 is caused to adhere to each side thereof by the shellac. The latter water-proofs the board aswell as acting as an adhesive. Other suitable adhesive may of course be employed. The structure thus formed is then enclosed" by a piece of cloth 9, preferably felt, formed, as shown in Fig. 6, as a flat bag or envelope leaving a flap which is thereafter sewed shut, as shown in Fig. 7 This material serves as a further protection .at the edges and at the corners as well as elsewhere.
The mortar board is then covered with suitable,- cloth or finishing material and is sewed to the crown, the latter being madeusually from material such as buckramn The two are sewed together by basting threads which are passed through from the inside to the outside of the cap and back through the same holes in the exterior cloth covering so that the thread is not seen from the top. The thread is not passed through the same holes in the felt 9 or through the cloth 8 on opposite sides of the corrugated board, but at a slight distance therefrom so that the felt and cloth prevent the thread from pulling through the corrugated board. These basting threads are indicated by the dotted lines 10 in Fig. 7 and are concealed in the finished cap by the lining.
Caps made in the manner described remain smooth and flat indefinitely on top, which is V to a very important feature, in that, although many caps are sold to the users, in a large percentage of cases the caps merely are rented for commencement exercises at schools and colleges, and'thus, being used only at very long intervals, must remain in good condition for many years in order to be handled on a profitable basis.
Although the foregoing improvements are described in connection with a so-called mortar board cap, many of them may be used adtypes,
vantageously in caps or hats of other as will be apparent.
What I claim is: V 1 1. In amortar board cap, a sheet of-corrugated board and thin sheet metal channel 7 members fitting over and reenforcing the edges thereof, one of the flanges at each end of each of said channel members being disposed between the flangesof adjacent channelmember, said channel members being in tegrally united at the corners to provide a continuous perimetric reinforcing rim.
I 2. In amortar board cap, a sheet 'ofcorru: gatedboard,thin sheet metal channel Inem- 'b e'rs reenforcing the edges thereof, fabric se-r cured to each face of said corrugated board by'a Waterproof adhesive, and a thick protect-' ing envelope of fabric in which said corrugated board is confined.
3. Ina mortar board cap, a sheet of corrugated board, thin sheet/metal channel members fitting over and reenforcing the edges thereof, fabric secured tojeach face of said corrugated boardby a WELtGlPIYOOf; adhesive,
and a crown sewed to said corrugated board by threads passing throughboth' of said lay i e'rs of fabric. Y
4'. In a mortar board cap, a sheet of corrugated board, thin sheet metal channel members reenforcing the edges thereof, fabric secured to each face of saidcor'rug ated board by awaterproof adhesive, an envelope enclos- I 111g saidboard, a crown sewed to said corrugated board by threads passing through both of said layers of fabric,and' a finishing fabric concealing said corrugated board and its envelope.
In testimony whereof, I have subscribed,
'myname, v- I I 'OLARENCElBs-c R C