US1207839A - Molding apparatus for founding. - Google Patents

Description

E U. BEARDSLEY 61 W. F. PIPER.

MOLDING APPARATUS FOR FOUNDING.

APPLICATION mu) DEC.2S 1915.

Patented We. 12, 19143.

2 SPEETS SHEU 1.

awuemto'p E. 0. BEARDSLEY & W. F. PIPER. MOLDING APPARATUS FOR FOUNDING.

APPLICATION FILED DEC.28. I915- Patenred Dec. 12, 19H

2 SHEETS--SHEET 2 an me n 302 %TE@ A l FLAME 0. BEAEJDSLEY AND WALTER F. PIPER, 01E KLAMATH FALLS, OREGON.

MOLDING APPARATUS FOR. IOUNDING.

oreen- Specification of Letters Patent.

Patented Dec. 12, ltlllbe To all whom it may concern Be it known that we, ELMnn 0. lBEARDSLEY and WALTER F. Prrnn, citizens of the United States, residing at Klamath Falls, in the county of Klamath and State of Oregon, have invented certain new and useful Tmprovements in Molding Apparatus for Founding, of which the following is a specification. 2

The present invention appertains to molding apparatus of that type designed for impacting sand in molding flasks by violently or forcibly projecting the sand thereinto instead of paohng it by means of hand rammers or other various mechanical instrumentalities heretofore generally utilized for this purpose.

The invention resides in the combination with sand feeding means, of means cooperating therewith to rapidly project .the sand in relatively small quantities and in substantially a steady stream into the flasks disposed in position to receive said material.

An object in view is to employ for this purpose a revoluble member provided with a sand engaging element from which the sand is thrown through centrifugal action under control of means cooperating therewith, the engaging element aforesaid being of a yieldable character toprevent breakage or stoppage of the operation upon encountering metallic or other foreign substances passing through the feedlng means.

Another ob ect is to provide means for regulating the operative area of the sand engaging member.

A still further object is to insure against likelihood of failure of the proper feeding of the sand to the projecting means above mentioned, operating means for driving the rev oluble member and simultaneously a' itating the sand feeding hopper being utilized to obtain this continuous flow of the material.

Tl: r and such other objects as may hereinafter appear are attained by the novel construction, combination and arrangement of parts to be hereinafter specifically described and claimed.

Reference will now be had to the accompanying drawings forming apart of this specification, wherein: I

Figure 1 is. a sectional view takensub stantlallv on the lane indicated by the line 22 of Fig. 2. ig. 2 is a side elevation of the apparatus forming the embodiment of our invention, parts being broken away and shown in section to more clearly disclose thereference characters.

Referring to the drawing and specifically describing our device, A designates a casing comprising the corresponding side plates 2 and 3, secured together by fastening means or bolts 4:. This casing A is of substantially circular configuration and mounted transversely-in the same is the driving shaft 5, a the bearings for which are suitablybushed as indicated at 6. The shaft 5 has fixedly secured to one end, exterior of the casing, a driving pulley 7 adapted to be actuated by any suitable driving means, not shown. The shaft 5 is maintained in proper position in the casing by means of the set collar 8 mounted upon the end of said shaft opposite the pulley just referred to. Secured to or formed integral with the shaft is the sand projecting means comprising in the embodiment of our device, the revoluble disk 9. Said disk is provided at a suitable point on its periphery with a sand engaging elementconsisting of a sectional blade comprising a stationary section 10 which is semi-circular in formation and extends transversely of the disk 9, and a correspondingly shaped yieldableor movable section 11. These sections, as will be noted-particularly in Fi 1, form a substantially circular blade. he yield- 7 able section 11 comprises, a semi-circular plate which is detachably fixed'to the end of a dog or arm 12 pivotally mounted at 13 on the vertical ear 14: extending from the pe-' riphery of the disk 9. The'opposite end of the arm 12 carries an adjusting member or set screw 15 which cooperates with the rear portion of the car- 14 as most distinctly shown in Fig. A of the drawings. The tion 11 of the blade is mounted justin rear of the stationary section 10- and isheld in lltltl normal operative position by means of the 1 explained more in detail as this description.

proceeds. I

From Fig.,1, it will be noted that the peripheral portion of the casing A is circular in cross section and conforms substantially to the shape of the sand engaging blade above referred to. This peripheral portion or channeled member, designated 17 of the casing A is provided at one side with a discharge opening 18 and adjacent to said opening are provided means for removing from the revoluble element 9, and more specifically statedfrom its sand engaging blade, any superfluous -sand that may be lodged behind the blade and tend to choke that portion of the channel 17 into which the blade passes after leaving the discharge opening 18 thereof. The means referred to consist of transversely disposed shearing blades 19, 19, the inner ends of which project into the casing andin close proximity to the periphery of the disk 9. These blades are adjustable through the instrumentality of the set screws 20 carried by the casing plates 2 and 3. Thedisk 9 is formed with an enlarged portion 21 opposite the sand engaging blade and this constitutes a counterbalance weight for the revoluble member. At the upper portion of the casing A is located the sand feeding means which consists of the hopper B, said hopper being pivotally mounted upon the side plates 2 and?) of the casing by means of a pivot bolt 22, shown in Fig. 2 of the drawings. The sand is supplied to this hopper B by suitable conveyer means or otherwise, not shown, and it is not believed necessary to describe such instrumentalities as they form no part of the present invention. The hopper B obviously communicates with the casing A at its lower portion and maintains a supply of sand for said casing, which sand is acted upon by the sand engaging blade of the disk 9 as it revolves. In order to insure the steady flow of sand from the hopperywe provide means for agitating ,or vibrating said hopper, and to this end a bracket 23 is attached to the side plate 3 of the casing A at its upper portion and said bracket supports the crank shaft 24 disposed transversely of said casing A. The crank arm 25 at, one end of the shaft 24 is operatively connected to the end of the hopper B as indicated at 26 while the crank arm 27 at the other end of the shaft 24 is connected through the instrudriving shaft 5 of the disk 9. This con- .nection'intermediate the rod 28 and the shaft is provided by means of the pin 29 which is attached eocentrically to the end of the shaft 5 as shown most clearly in Figs. 1 and 2. All of the bearings for these rotating parts are suitably bushed and provided with lubricating means as required for elements which are operated at high speed. It will be understood that the material from which the disk, its blades and the casing A are madeiis such as is suitable for operating upon sand material and as would best withstand the wear and strain incident to the operation of high speed mechanism.

In order to best provide against wear in that part of the channel 17 intermediate the hopper B and the discharge opening 18, we preferably employ a shell lining 30 of suitable material to withstand the abrasive action of the molding sand. This sand, it will be understood, is of a softer character than ordinary sand, and hence, the wear is not very great, but the provision of the removable shell 30 enables the renewal of this protective member from time to time as it becomes nec In the operation of the invention, and as hereinbefore premised, the sand which is operated upon and projected into molding flasks disposed at a. suitable point with respect to the apparatus hereinbefore described, is su pplied to the hopper B from which it flows into. the channel 17 of the casing A. The projecting member or disk 9 is rotated by the driving means at a very high rate of speed, orsomething like 700 revolutions per minute and as it passes the lower opening of the hopper it engages the sand which is driven through that part of the channel 17 of the casing A intermediate the hopper and the discharge opening 18. The function of this casing is of a dual character in that it predetermines the quantity of the sand which is carried by the sand engaging blade and projected therefrom since said channel conforms to the shape of this blade and, secondly, this casing retains the sand upon the blade until said blade has reached a predetermined point in its rotation, that is, until it reaches the discharge opening 18, where the sand is suddenly relieved and projected by reason of the centrifugal action into the flask arranged beneath the easing A. During the revolution of the sand projecting member 9 the hopper is agitated by means of the shaking means or crank shaft 24 which is connected to the driving shaft 5. The likelihood of choking of the sand in the hopper is precluded by this arrangement and there is, therefore, a substantially continuous steady stream of sand projected from the apparatus into the flasks at a Very high rate of movement or something like 2500 feet per minute, causing the sand to be compacted in said flasks as desired for molding purposes.

In the event that nails or other foreign substances should happen to pass into the hopper B in the sand and arrive at the mouth of the channel 17, the yieldable section 11 of the blade will be depressed or will drop down behind the fixed section 10, and hence this will prevent likelihood of breakage of the blade or damage to the casing and its parts. As the channel 17 wears, the yieldable section 11 of the blade is adjusted so as to maintain a fairly close fit or conformation of said blade with respect to the channel 17, such adjustment being accomplished by setting of the adjusting element 15. The adjustment of this section 11 in this manner controls the operative area of the blade. Any sand which adheres to the edges of the blade or lodges behind the same is continuously removed by the shearing blades 19, '19, at the discharge opening 18 and any additional sand which might be drawn intothe lower portion of the channel 17 of the casing is permitted to pass outwardly thereof through the lateral openings 31 in the side plates 2 and 3. 'The channel is thus maintained from being choked in this manner and the operation of the revoluble means is greatly facilitated so as to require a minimum amount of power for driving the same.

It is to be understood that any desired number of sand engaging blades may be utilized. for carryin out the foregoing operation and other 0 anges may readily be made in the details of construction of this device, without departing from the spirit of the invention and within the scope of the claims appended hereto.

Having thus described our invention, what we claim as new is:

I. In molding apparatus for founding, the combination with a sand supply means, of a continually rotating member associated therewithand having a sand engaging element to receive and project the sand from the supply means, a casing substantially conforming in cross sectional area to and surrounding the engaging element to the point of discharge of the sand for controlling the quantity of said sand projected by the same and retaining the sand on the engaging element against centrifugal displace ment, and means for rotating said rotating member.

yieldable sand engaging element, and means foroperatin said extracting means.

3.'In mo ing apparatus for founding,

the combination with sand supply means, of means associated therewith for forcibly projectin sand therefrom, in predetermined quantlties, consisting of a contractible sand engaging member comprising relatively movable sections, and means for operating said projecting means. v

4:. In molding apparatus for. founding, the combination with sand supply means, of means associated therewith for forcibly projectin sand therefrom in predetermined quantlties consisting of a sand engaging member comprising relatively rigid and yieldable sections, and means for varying the capacity of the engaging member.

5. In molding apparatus for founding, the combination with sand supply means, of means associated therewith for projecting sand therefrom in predetermined quantities comprising a revoluble member having a sectional sand engaging blade, and means cooperating therewith for controlling the operative area of the blade.

6. In molding apparatus for founding, the combination with sand supply means, of means associated therewith for projecting sand therefrom in predetermined quantities comprising a revoluble member having a sectional sand engaging blade, and means coiiperating therewith for controlling the operative area of the blade, said means being yieldable upon contact with foreign substances encountered in its path.

7. In molding apparatus for founding, the combination with sand supply means, of means for projecting sand therefrom in predetermined quantities comprising a revoluble member having a sand engaging ele ment at its periphery comprising a blade consisting of a relatively fixed section arranged transversely of the revoluble memher, and a movable section cotiperating therewith, means for adjusting said movable section, and means for actuating said revoluble member.

8. In molding apparatus for founding, the combination with sand supply means, of means for projecting sand therefrom in predetermined quantities comprising a revoluble member having a sand engaging element at its periphery comprising a blade consisting of a relatively fixed section arranged transversely of the revoluble member, and a movable section cooperating therewith, means for adjusting said movable section, means for holding the movable section in adjusted position, and means for actuating said revoluble member.

9. In molding apparatus for founding, the combination with a sand supply receptacle, of means for projecting sand therefrom in predetermined quantities comprising a revoluble member having a sand engaging element operable through the supply receptacle, a casing in which said member is operable after leaving the receptacle having a channel conforming in cross section to the 'sand engaging member for restricting the quantity of the sand projected according to the operative area of the engaging element and retaining the sand thereon, and means for operating the revoluble member.

10. In molding apparatus for founding, the combination with sand supply means for projecting mined quantities, comprising a rotatable member, an adjustable sand engaging blade carried thereby automatically adjusting itself to take up wear from use, a casing cooperating with the blade and substantially conforming in contour thereto whereby to control the quantity of sand carried by said blade, and operating means for said revoluble member.

11. In molding apparatus for founding, the combination with sand supply means, of means for projecting sand therefrom comprising a movable sand engaging member, the sand being projected from the member at a predetermined point in the travel thereof, and wiping means for removing superfluous sand from said member.

: 12. In molding apparatus for founding, the combination with-sand supply means, of

means for projecting sand therefrom comprising a movable sand engaging member, means for controlling the point of discharge of the sand from the engaging member, and stationary wiping means disposed adjacent the point of discharge of the sand adapted to cooperate with the engaging member to remove residue sandadhering thereto.

13. In molding apparatus for founding, the combination with sand supply means, of means for projecting sand therefrom comprising a movable sand engaging member, a c ing cooperating with said member for reta ning the'sand thereon a predetermined extent of travel thereof and having a discharge opening controlling the point of discharge of the sand from the engaging member, and adjustable shearing elements on the casing coacting with the engaging member adjacent to the discharge opening to remove sand adhering thereto preliminary to reentering the casing.

14. In molding apparatus for founding, the combination with a sand supply container, of means for projecting sand therefrom comprising a movable sand engaging member, a casing coiiperating with said member for retaining the sand thereon a predetermined extent of travel thereof and sand therefrom in predeterhaving a discharge opening controlling the point of discharge of the sand from the engaging member, and means for agitating the feeding container to maintain a continuous supply of sand to the projecting member.

15. In molding apparatus for founding, the combination with a sand feeding container, of a continuously and rapidly moving projecting member associated with said feeding container whereby to discharge sand therefrom in asubstantially continuous stream, and operating means for simultaneously actuating the projecting member and agitating the feeding container aforesaid.

16. In molding apparatus for founding, the combination with sand feeding means including a pivoted hopper, a projecting member disposed to receive sand from said hopper, driving means for actuating the projecting member, and means intermediate the driving means and the hopper to bodily agitate the hopper for maintaining the continuous flow of the latter during operation of the projecting means.

17; In molding apparatus for founding, the combination with sand feeding means including a bodily movable hopper, a casing on which said hopper is movably mounted at one side and having communication therewith, a sand projecting member revolubly mounted in the casing, driving means on which said projecting member is mounted, means on said casing operably connected to the other side of the hopper from that above mentioned for agitating the same, and connecting means intermediate the last mentioned means and the driving means aforesaid.

18. In molding apparatus for founding, the combination with sand feeding means comprising a hopper, a casing on which said hopper is pivotally mounted, a sand projecting member mounted in said casing, driving means for said projecting member, shaking means for agitating said hopper comprising a crank shaft operably connected at one end to said hopper, and a connecting member connected at one end to said crank shaft and at its other end eccentrically connected to the driving means for said projecting member, whereby to agitate the feeding means simultaneously with the operation of the projecting member.

In testimony whereof we aflix our signatures.

ELMER o. BEARDSLEY. WALTER F. PIPER.

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