US907129A

US907129A - Covered jar.

Info

Publication number: US907129A
Application number: US31767806A
Authority: US
Inventors: Conrad M Conradson
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-05-19
Filing date: 1906-05-19
Publication date: 1908-12-22
Anticipated expiration: 1925-12-22

Description

G. M. GONRADSON. GOVERED JA.R. APPLIOATIOH mum my 19, 1906.

Patented Dec. 22, 1908.

2 SHEETS-SHEET 2.

45 I may be produced by will be so constructed that- Specification of Letters Patent.

Patented Dec. 22, 1-908.

Application filed May 19, 1906. Serial- No. 817,678.

To all whomz't may concern:

Be it known that I, CONRAD M. CONRAD- SON, a citizen of the United States, residing in Madison, in the county of Daneand State of isconsin, havev invented certain new and useful Improvements in Covered Jars, of which the following is a specification.

This invention relates and has for an object to provide an improved covered jar, and more particularly one wherein a jar and its cover will be m-ade'out of y a series of interlocking faces the cover will be securely seated upon thejjar. It is impossible in blowing glass to produce exact faces for engagement, .as for instance the faces of the lugs upon the jar and cover respectively which] are to engage; but bymy improvement by properly positioning and proportioning these lugs and accurately grinding the meeting edges of the jar and cover where these evenness in the lugs will. merely suffice to cause "the two faces to slide one, upon the other and securely seat the coverup'on the In the drawings accompanying and forming a part'of thisspecification, Figure 1 is a side view of a jar having itsneckand its cover shown in central section to illustrate a practicable form of myinvention applied to the jar. Fig. 2 1s a view 'on a plane in about the line 2' 2 of Fig. 1 looking down- ,wardly. Fig. an enlarged side view 'of 4 perspective view of the upper portion of the jar. Fig. 4 is a ,a jar showing only the upper portion; and Fig. 5 is an enlarged perspective view of a cover.

1 A jar body 7 is shown having a contracted nec portion 8 and a shoulder ortion 9. The neck 8 is in the main cylin rical and has about it a number of lugs; in the present instance there are shown three lugs or projections 10, which project, outwardlv,and these are equally spaced, apart; such lugs a blowm process, and the neck will have cavities or epressions 11 behind these lugs. The engaging=face 12 ofwhich lug is shown as helicoidally disposed relative to the perpendicular of the jar axis. In the. present mstance it will be seen that in Fig. 3 the end 14 ofthe lug is lower than the end 15 from the horizontal face 16 upon the neck, and which face is to afford a seat-for a face 17 upon aflange 30 lass and these come together the unstructure which will 20 will merely carried by the cover 18 of the jar. The

faces

16 and 17 will be accurately mind so that the entire portion of each wil lie in the same true plane. Such cover will have lugs 19 for coeperation with the lugs 10 and the engagin" faces 20 of these may also be dispo'sedhe icoida-lly. It will be seen by reference to Fig. 5 that the end 21 of the lug is thinner than the end 22. By reference to Fig. 1 it will be seen that the side wall or flange, as it may be called, 23 of the cover,

,tends out over the shoulder 9, but does not extend beyond the outer perimeter of the jar; it extends out, however, a sufficient distance to make a symmetrical structure when in place. 7 It will be seen that the flange 30 is carried by the cover and is disposed inwardly of the flange 23 which .carries the lugs 19. The chamber or channel 31 between the flanges 30 and'23 renders it possible to face 17 of the flange 30 and get the same disposed upon a true plane with much greater ease than were this flange not present. The side of the flange 23 may be made in some shape which will grasping surface for the present instance this may series of channels 24, leaving between these a series of ribs 25, thus producing a fluted give a suflicient gnp hand, and in the grind the a beproduced by a for the fingers whereby the lid may be so curely seated upon thejar, the shapeof the

faces

20 and 12 being such that the seating will be done in a right hand movement or in 'the direction of the arrow 26 in Fig. 2.

In the usual methods of manufacturing jars it will be highly impracticable in many instances to produce the faces 12 and the faces 20 wfih such accuracythat-thesewill register up sufficiently to draw the

faces

16 and 17 together, unless such faces 16 and 17 are ground with absolute precision and there is a certain amount of play between the

faces

12 and 20 until these have been drawn up to the tightening position. Any ununiformity which may exist between such faces 12 and cause the face 17 to slide upon the face 16 until the parts have been brought into proper position for lockin when a further rotation .of. the lid relative to the jar will cause a firm and uniform seating of the face 17 upon the face 16. Jars made according to my prwent. improvement, 'and the meeting faces 16 and 17 being ground. wgfh absolute precision will be interchangea e.

I By placing the lugs 10 in suitable relation to each other and to the neck8 by which they are carried the top face 16 of this neck may be made circular and the general con tour of the neck cylindrical.

By having three lugs upon the jar for the engagement of three lugs upon the cover a self centering action is had which is not possible with any other number. I do not confine myself in all instances to the use of such number of lugs when the other features of my invention are employed.

Having described my invention I claim:

1. The combination with a jar havlng a. neck provided with downwardly facing helicoidal' engaging faces, of a cover carrying a flange provided with inwardly directed lugs provided with upwardly facing helicoidal engaging faces mating with the faces on said neck, said jar having an upwardly facing cover seat ground to a true plane, and said cover carrying a flange disposed inwardly of said lug carrying flange and provided with a face ground to a true plane seating upon the said cover seat.

2. The combination with a glass jar having a cylindrical body portion, a neck of less diameter than the body, and a shoulder formed between the neck and body, said neck having integral outwardly projecting lugs upon it, the edge of said neck being round to a true plane, a glass cover for said ar having a flange for surrounding said neck and when in position overlying the shoulder, integral inwardly projecting lugs upon said flange for cooperation with the lugs upon the neck, and said cover having a flange within said lug carrying flange provided with a face ground to a true plane for seating upon: the edge face of the neck.

3. The combination with a glass jar having an upstanding neck in the nature of a flange, the edge of said neck being ground to a true plane, said neck having three integral outwardly projecting lugs provided for said ground to a'true plane for seating upon the said edge face of the neck, and having three integral lugs provided with" faces for engagement with the lugs upon the neck.

' CONRAD M. CONRADSON.

itnesses p CHAS. LYON RUSSELL, FRED. J. DOLE.