US899762A - Milk-can. - Google Patents

Description

F. H. RIGHARDS.

MILK CAN.

APPLICATION FILED 0OT.30, 1901.

899,762, Patented Sept. 29, 1908.,

2 SHEETS-SHEET 1.

fnwenfar: 746

F. H. RICHARDS.

MILK CAN.

APPLICATION FILED 00130, 1901.

Patented Sept. 29, 1908. 2 SHEETS-SHEET 2.

Mffilfli'.

FRANCIS H. RICHARDS, OF HARTFORD, CONNECTICUT.

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To all whom it may concerm Be it known that I, FRANCIS H. RICHARDS, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Milk-Cans, of which the following is a specification.

This invention relates to milk-cans, one,

object of the invention being to provide a milk-can with an im roved reinforced neck.

A further object o the invention is to provide a one-piece structure forming theupper part of a milk-can with a thickened neck, thereby to reinforce such neck and prevent the twisting or distortingiof such neck and also prevent elasticity of the metal at this point.

Another object of the invention is to furnish the neck of. a milk-can with increased thickness by thickening the metal-of which such neckis composed during the shaping of such neck.

In the drawings accompanyin andforming a part of this specification, Figure 1 isa partly sectional view of a part of a milk-can aving a breast, bowl, and thickened neck formed in one piece. Fig.2 is a'pers ective view of a disk from which such artic emay be made. Figs. 3 and 4 are sectional views illustrating steps in ,the formation of the article. Fig. 5 is a partly sectional view of one and a simple form of apparatus 'which may be used to carry out this improved proc ess, and Fig. 6 is a detail, on anenlarged scage, showing the use of one form ofspinning too I e Similar characters of reference designate corresponding parts in the. different figures of the drawing.

In order that-a clearunderstandiug may be had of the resent improvement, a brief reference will be made tov the prior art. as I am-aware of it. t 3

It is a well-known fact in the trade that. a drop of foul milk will, in a short-railroad journey, foul many allons of pure milk. Consequently it is abso utely necessary that a milk-can be thorou -hly cleansed so that no impure same. any patents have been Issued for improvements 1n milk-cans, but all, with two exceptions, have disclosed structures having joints or seams in the upper part thereof, from which it is a difficult matter to remove articles s all remain within the Specification of Ilette rs Patent.

Application filed October 80, 1901. Serial No. 80,488.

with the milk; This elasticit Patented Sept. 29, 1908.

such impure particles, especially when this joint or seamis located at the underside of the neck where it is not readily accessible.

It is understood by those familiar with the F milk-can business that a milk-can having its breast,bowl, and neck of an integral structure is practically perfect for cleansing purposes; in other words, such a structure, being seamless, is without crevices for the reception and retention of impure particles of matter. Such a can was patented and has been from time to time placed upon the market,

but, owing to its structure and "the way in which it was made, .its disadvantages are greater thanits advantages. That is to say, while it was without seam or joint, and therefore readily cleansible, nevertheless the neck was very elastic, so that in use it quickly became distorted or twisted out of shape, while also at times ermitting the bowl to becomecrushed on t e breast. Not only this, but owing to the elasticity of the neck the coversxwould jar loose, jump partially out andturn sidewise, during the jolting of rail-' road cars and wagons, thus permitting dust, dirt, and impure particles of matter to mingle is due to a large" extent to the thinness o the metal of the neck, resulting from the drawing out of the article from a disk, this drawing operation renderingthe metalat the neck portion much-thinner than the metal of theoriginal disk. These disadvantages more than offset the one great advantage of providing a seam-v less breast, neck, and bowl, consequently such patented. structure never met with any great success intlie market, as it. too fre quently pairs, its life eventhen being com aratlvely short." Subsequent to the issue'o' this patout many patents have been issued for improvements in milk-cans, but only 0ne of which,'however, has contemplated the remforcing; oftheneck of an inte ralbowl, neck,

andbreast of a milk-can, an this by. means ofan independent and se arate band located around such neck; it not aving been thought possible, so far as-the art discloses, up to the time of such invention, to provide a seamless bowl, neck, and breast with a reinforced neck, whereby all the advanta es of-a.seam

less structure couldbe obtaine without any of its disadvantages The structure set forth in the one patent towhich I have ust had to be sent to the shop for re referred does not, however, provide a onepieee bowl, neck, and breast in which the metal of the neck itself is utilized to strengthen such neck; on the contrary, the neck is re- .inforcedby the use of an independent and separate band placed around the same, usualy after the breast, bowl, and neck are completed, thus requiring additional time,

labor, and expense to complete the can. By

my improvement I am able to reinforce the neck without the use of an independent and separate band, and to reinforce such neck during the forming and shaping thereof.

To furnish this improved article of manufacture I may first provide a hollow or tubular shell or blank, and then suitably shape it to form a breast, neck, and bowl, which shaping 0 eration is effective to work the breast being used for thls'purpose.

and owl or mouth in such manner as to form a neck of increased thickness as vcornared with the thickness of the'bowl and reast metal.

In making this improved can I first pre to one mode of treating this blank, I may take a disk, and by a series of steps wellknown in the art, draw the same by succes- 'sive stages into a tubular blank or shell.

Twoof such stages are shown in Figs. 3 and 4, that 'shown in Fig. 4 illustrating the last drawing 0 eration.

When t e hollow or, tubular blank is in readiness for the pro er shaping thereof into the finished article, t 's is preferably done by subjectin such blank to the graduated op-- eration o spinning, some suitable a paratus In t e drawings is illustrated a simple form of such an apparatus. The partially formed blank A' hav ngbeen mounted in "place on the spinning lathe B, the elongation of the neck portion of the article is resisted by suitable means, shown in the apparatus disclosed in the drawings as a tool ordie G and plunger D 'comprisin a part of hydraulic means, whereby longitudinal extension of said neck portion is prevented durin the reduction of the same to the smaller diameter indicated by the dotted lines a in Fig. 5. The spinning tool or wheel E (various formsoi' which may be used) operates on but a small area at a time, and as this operation extends over the entire area to be reduced themetal is gradually beaten *or driven in little by little, thus ultimately bringing all of the metal in a given area of relatively lar ediameter into a correspondin area but 0 a much smaller diameter; an in this way a given quantity of use to properly sha e the blank.

metal, distributed over a given length of the larger blank, is brou ht into a corresponding or shorter length 0 the smaller and completed article, and by this means the smaller article is necessarily thickened through the compression of the metal from a large area into a much smaller area. At the sametime, ofcourse, the metal is firmly condensed and solidified, and an article of superior stability and reliability obtained.

In the present instance, during the forming or shaping operation just set forth, the blank may also be subjected to endwise pressure, which assists in giving the neck its increased thickness. This pressure is obtained in the apparatus shown in the drawings by hydraulic means, and for this purpose a suitable plunger D, projecting into a cylinder F carried by a head adjustable on uide-ways of suitable framework, is provided, which plunger is rotatable relatively to such head and carries a forming tool or die 0 provided with a clamping ring C for clamping one part, as for instance the bowl or mouth-end of the blank, such tool having at one part the shape which the bowl is to have, and at another part a diameter corresponding to the interior diameter of the neck after it is imished. The opposite end of the blank, as for instance the breast, is carried by a suitable tool H having a shoulder against which a shoulder in the breast rests. One of these tools, shown as the tool H, is provided with a recess or chamber 'H into which the other tool slides, it being splined'thereto, whereby @both of the tools rotate together. Any suitable means may be provided for rotating the tools forming the lathe head. In the present instance this means is shown as a set of pulleys I and gearing J, the pulleys being adapted to impart one speed to the lathe, and the gearing a different, such for instance as a slower speed.

In forming the article with an apparatus substantially similar to that shown, the blank is placed upon the lathe in the manner shown in Fig. 5, and the lathe head started, whereupon during the rotary movement of the blank the spinning tool is brought into During this shaping of the b ank the flowage of the metal longitudinally is not only restricted but the tool is gradually forced, by hydraulic pressure acting on the plunger D, mto the chamber H of its companion tool H, whereby the metal blank is placed under endwise pressure, thus insuring a condensation of the metal at and adjacent to the neck and a consequent thickenin thereof, the metal of the ened as they approach such neck.

From the foregoing, it will be seen that I am able to provide an improved article of manufacture comprising an integral breast,

bowl and breast a so being somewhat thickneck, and bowl of a milk-can, with such neck reinforced without the use of an independent strip or band.

' Having described my-invention, I claim- 1. A receptacle com rising a breast and a bowl or month, each ari outwardly but in opposite directions to eac other and connected by an inte ral condensed metal neck of increased thic ness in cross section as compared with the major part of the bowl or breast.

2. A milk can com rising abowl and a breast flaringoutwar ly in op osite directions and connected by a 'con ensed metal one piece neck of increased thickness in cross section as compared with the metal'of such bowl and breast.

3. A milk can com rising a bowl or mouth and a breast integra y connected by a condensed metal oneiece neck, the metal of which is of uniform y greater thickness than the metal of such breast and bowl;

4. A milk can comprisin a breast and a bowl, each flaring outward y in a direction opposite to the other and connected by a condensed metal neck integral with such breast and bowl, the metal of said breast or bowl, or both, increasing in thickness toward the-juncturepoint thereof with the neck, and said neck having increased thicknessin cross section as compared with the major part of the metal of said bowl or breast. I

5. A milk can comprisin a bowl and 'a breast, each flari outward y in a direction opposite to the ot er and connected by an integral condensed metal neck, the metal'of which neck and of the bowl and breast adjacent to their juncture points with such neck having increased thickness in cross section as compared with the thickness of the remainderof such structure.

6. A receptacle of the class described having a bowl and a breast integrally connected by a neck having approximately double the 7 thickness of a large part of such bowl and breast. I

7. A milk can having a bowl or mouth and a breast integrally connected by a neck hav ing greater thickness in cross section than that of a large part of the breast and bowl.

FRANCIS H. RICHARDS.

. Witnesses:

C. A. WEED, B. C. STICKNEY.

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