US1416836A - Sealing apparatus - Google Patents

Description

IQ KEESING, In. SEALING APPARATUS.

APPLICATION FILED APR. 6, I921.

Patented May 23,1922.

lsAi'xc KEEsme .Tumor.

INVENTOR; By C satires salaries SEALING APPARATUS.

per 6,836.

Application filed April 6, 1921.

Specification of Letters Patent.

Patented Ill-lay Serial No. 459,208.

(GRANTED UNDER THE PROVISIGNS OF THE ACT 0F MERGE 3, 1921, -11 STAT. L, 1313.)

To all whom it may comer r Be it known that I, IsAi'io linnsnvo, Junior, a subject of the Queen of the Netherlands, residing at Amsterdam, in the Province of Northllolland, in the Kingdom of the Netherlands, have invented certain new and useful Improvements in or Relating to Sealing Apparatus, (for which I have filed application in Holland March 28, 1919, and obtained Letters Patent in Holland No. 5,370, granted October 15, 1920,) of which the following is a specification.

The object of the present invention is an improved sealing apparatus, wherewith letters, parcels and the like may be neatly sealed in a very simple and effective manner, with out producing the well known disagreeable smell, and without spilling the sealing-wax, the risk of setting the paper on fire being totally obviated.

Sealing apparatus of the type to which the present invention relates, consist of a box containing the sealing-wax, said box having a spout and means for heating said spout, which in inoperated position of the apparatus is directed upwards.

According to the invention said spout is separated from the box containing the sealing-wax by means of heat-insulating partition, an aperture being made therein in such a way that the granular sealing-wax. in the operative position of the apparatus is allowed to pass into the spout, in the inoperative position of the apparatus the melted wax stayed behind in the spout, however being prevented from flowing back into the box.

In order that my invention may be fully understood it is hereinafter further described with reference to the accompanying drawing, in which 1 is a cylindrical metal box at a suitable distance surrounded by a metal protecting shell 2. The sealingwax may be poured into the box through a tunnel-shaped opening 3, adapted to be closed by a stopper 4. The whole is supported by feet 5, by means of which the apparatus in the position shown in the drawing (the inoperative position) be placed upon the desk. At one end the box is pro vided with a hollow handle 6, through which electric conductors 7 for the electric heating elements may be let into the apparatus. The closing and breaking or the circuit may be effected in a very simple manner. by means of a push button switch 8. A. the opposite end a plate 5) of non-conduct ing material is provided having two apertures 10 and 11, the former serving tor in terconnecting the inner space of the box and the spout. the latter to let pass the conductors 7. The spout 12 is tapered and in the inoperative position is directed u jnvards, so that the sealing wax is prevented from flowing out. At a suitable distance the spout 12 is surrounded by a conical sleeve 13, whilst the enclosed space taken up by the electric heating elements 141 which in a well known manner consist of a combination of asbestos and new silver wire.

The opening 10 in the plate 9 is provided at such a height that the upper edge of said opening and that of the box (in operative position of the apparatus) are in line. The conductors 7 may consist ot a cordline with plugs, not shown in the drawing.

The working of the apparatus is as tollows:

The box 1 is filled with the sealing-wax in a subdivided state preferably in the form 01 grain, whereupon the opening 3 is closed by means of the stopper 4..

For sealing one or more letters one takes up the apparatus at the handle (5, closes the circuit by pushing the button S and turns the apparatus through an angle of 180 about it longitudinal axis. The grains of wax thereby fall through the aperture 10, which with respect to the grains is of suiticient width into the spout 12, the latter at the outer end being so narrow that the grains are arrested at a suitable distance from the end. The spout 12 is soon heated by the heating elements 14 to such a degree, that the sealing wax melts and flows out of the spout in the form a thin jet. to where it is desired. The protection of the insulating sleeve 13 and the heat-capacity of the heating elements cause the sealing wax, even after the button is released and the circuit is broken, to keep flowing out for some time, so that the speed oi flowing and the degree 01" thickness to some extent may be regulated by pushing and releasing the button 8. Then the sealing is done the button 8 is definitively released and the apparatus returned into its inoperative position. The melted wax stayed behind in the spout thereby flows into the baglike space 15 of the spout, but is prevented from flowing back into the box 1 by the plate 9. This is necessary, while otherwise the apparatus would rapidly become stopped.

The sealing wax accumulates in the space 15 forming acake therein, which when the apparatus is again put in action, gradually melts off but will never choke the connection between the box and the spout. The insulating plate 9 has for its further object to prevent the it'ore-part of the box from becoming too hot since otherwise the grains oi? wax contained therein would stick and become unable to pass through the aperture 10.

The advantages obtained by the improved sealing apparatus art in short the tollowing:

The risk of setting the paper of the letter or parcel on lire, as exists when sealing in the ordinary way, is totally obviated, it is impossible to burn ones hand or the table; spots deriving from the sealing wax on the desk can easily be obviated; the apparatus works totally scentless, so that no hindrance is experienced from the smell of burning wax, candle smoke or the like; candles and matches oi? course are done with: the consumption. oi? wax is considerably smaller than in the ordinary way of sealing, since in the first place also the smallest particle oi wax may be used, whilst thequantity oi wax, which in the ordinary way by burning and dripping wax is wasted, now saved; the handling of the apparatus is considerably simplified, as no candles have to be lighted and extinquished, the piece of wax has not constantly to be moved to and from the flame and the paper.

But also with respect to the known apparatus of this kind, the invention presents considerable advantages. As only the spout is heated, the quantity of wax, which has to be melted before the apparatus can be used is exceedingly small whilst the main quantity of wax is hardly heated. in the case of the known apparatus referred to, the total quantity of wax has first to be melted. which especially when only few letters have to be sealed, means a considerable loss of time and current.

Experiments taken with the apparatus according to the invention have shown, that with a totally cold apparatus a few seconds after the circuit was closed, a stream of melted wax was delivered, so that using the apparatus means saving time.

The embodiment shown is only an example of carrying the invention into efl'ect, which oi'course is not limited to this especial form since it may be varied in detail without departing from the scope of the appending claim.

What I claim is:

An improved sealing apparatus having a box containing the sealing Wax, a spout and means for heating said spout, the latter in the inoperative position of the apparatus being directed upwards; characterized in that the spout is separated from the box by means of a heat-insulating partition having an aperture made therein in such a way, that the granular wax in the operative position of the apparatus is allowed to pass from the box into the spout, the melted wax stayed behind in. the spout in the inoperative position of the apparatus however being prevented from flowing back into the box.

in witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

ISAAC KEESING, JUNIOR.

Witnesses H. Y. Knrrnns, Y. G. LANGENDYK.

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