US944549A - Sieve. - Google Patents

Sieve. Download PDF

Info

Publication number
US944549A
US944549A US33988806A US1906339888A US944549A US 944549 A US944549 A US 944549A US 33988806 A US33988806 A US 33988806A US 1906339888 A US1906339888 A US 1906339888A US 944549 A US944549 A US 944549A
Authority
US
United States
Prior art keywords
sieve
screen
base
hoop
rim
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US33988806A
Inventor
Harry F Frohman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US33988806A priority Critical patent/US944549A/en
Application granted granted Critical
Publication of US944549A publication Critical patent/US944549A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/48—Stretching devices for screens

Definitions

  • My invention relates to an improvement in a sieve of the form primarily adapted to sifting molders sand.
  • Said sieves have a cylindrical body made of wood for lightness and the usual meshes.
  • the object of my invention is to preserve the lightness and increase the strength of the wooden body.
  • Figure 1 is a bottom plan view of my sieve.
  • Fig. 2 is a side elevation thereof.
  • Fig. 3 is a section of the body on line 00, Fig. 1.
  • Fig. i is a section of the body on line w, Fig. 1, showing one of the supporting wires in elevation.
  • the body of the sieve is made of two hoop sections. 1 represents the top or inner section across the base of which is stretched the usual screen wire 2. This screen wire is turned upward around the outside thereof forming a screen flange 4, as shown in Figs. 3 and 1.
  • the said hoop 1 is bent in circular form having the overlapping ends 5, 6, shown in Fig. 3.
  • the bottom hoop or rim 7 is likewise made of thin material, 8, 9, represent the ends of the same which are tapered and overlap to form the joint, as shown in Fig. 1.
  • the screen is made in the usual manner, but I have provided a series of supporting wires 10 crossing each other at right angles as shown in Fig. 1 and extending upward between the upper and lower rims or hoops, the ends of which are bent over and firmly anchored to said former rim, as shown at 11 in Fig. 4:.
  • the wooden body is subjected to great strains by the swelling and expansion action of the moisture which is apt to tear loose ordinary fastenings, and render the life of the sieve comparatively short.
  • the joints I provide a series of sustaining straps 16, 17 and 18, said straps are arranged and applied as follows: Strap 16 is bent over the top of the rim 1 forming a limb 19, which extends down upon the inside of the sieve and is secured thereto by a clench nail 20.
  • FIG. 21 represents a clench nail securing the said clamp to the central portion of the upper section 1.
  • Said strap is extended down, bent around the base 7 of the sieve, and with a limb 22 turned upon the inside and secured by a clench nail 15 to the hoop 12 and base rim 7.
  • Straps 17 and 18 are secured in a similar manner over the overlapping ends as shown. It will be noticed that the free ends of all of the flaps are firmly supported and united together to constitute a whole body by the said straps 16, 17 and 18.
  • I claim A sieve composed of three hoop sections comprising body, base and strengthening hoops, a screen secured between the body and base hoops, in combination with a series of wires spanned beneath the screen with their ends extended upwardly between I

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Description

' E] u canton H. F. PROHMAN.
SIEVE.
APPLICATION FILED 0OT.20, 1906,
Patented Dec. 28, 1909.
HARRY F. FBOHMAN, 0F CINCINNATI, OHIO.
SIEVE.
Specification of Letters Patent.
Patented Dec. 28, 1909.
Application filed October 20, 1906. Serial No. 339,888.
To all whom it may concern:
Be it known that I, HARRY F. FROHMAN, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Sieves, of which the following is a specification.
My invention relates to an improvement in a sieve of the form primarily adapted to sifting molders sand.
For such use it is desired to have the sieve light, but strong and durable. Said sieves have a cylindrical body made of wood for lightness and the usual meshes.
The object of my invention is to preserve the lightness and increase the strength of the wooden body.
The features of my invention are more fully set forth in the description of the accompanying drawings, forming a part of this specification, in which Figure 1 is a bottom plan view of my sieve. Fig. 2 is a side elevation thereof. Fig. 3 is a section of the body on line 00, Fig. 1. Fig. i is a section of the body on line w, Fig. 1, showing one of the supporting wires in elevation.
The body of the sieve is made of two hoop sections. 1 represents the top or inner section across the base of which is stretched the usual screen wire 2. This screen wire is turned upward around the outside thereof forming a screen flange 4, as shown in Figs. 3 and 1. The said hoop 1 is bent in circular form having the overlapping ends 5, 6, shown in Fig. 3. The bottom hoop or rim 7 is likewise made of thin material, 8, 9, represent the ends of the same which are tapered and overlap to form the joint, as shown in Fig. 1.
The screen is made in the usual manner, but I have provided a series of supporting wires 10 crossing each other at right angles as shown in Fig. 1 and extending upward between the upper and lower rims or hoops, the ends of which are bent over and firmly anchored to said former rim, as shown at 11 in Fig. 4:.
11 represent nails driven into the base rim 7 adjacent to the anchored ends of the wires 10 and clenched by contacting against the upwardly extended portion of the wires between the upper and base hoops, see Figs. 2 and 4. I
To further support the screen I provide an inside supporting hoop 12, with ends overlapping each other as rims 1 and 7.
15 represents rivets or nails for attaching the inside hoop to the base rim 7.
As the sieves are subjected to great strain and usually employed to screen damp material the wooden body is subjected to great strains by the swelling and expansion action of the moisture which is apt to tear loose ordinary fastenings, and render the life of the sieve comparatively short. To further strengthen the body of the sieve and prevent such expansion from tearing apart the joints I provide a series of sustaining straps 16, 17 and 18, said straps are arranged and applied as follows: Strap 16 is bent over the top of the rim 1 forming a limb 19, which extends down upon the inside of the sieve and is secured thereto by a clench nail 20.
21 represents a clench nail securing the said clamp to the central portion of the upper section 1. Said strap is extended down, bent around the base 7 of the sieve, and with a limb 22 turned upon the inside and secured by a clench nail 15 to the hoop 12 and base rim 7. Straps 17 and 18 are secured in a similar manner over the overlapping ends as shown. It will be noticed that the free ends of all of the flaps are firmly supported and united together to constitute a whole body by the said straps 16, 17 and 18. I have found by experience that the above described screen is very light, strong and durable. These straps limit the extent of the breakage of the body portion of the sieve, which without them would split the rim its entire circumference.
Having described my invention, I claim A sieve composed of three hoop sections comprising body, base and strengthening hoops, a screen secured between the body and base hoops, in combination with a series of wires spanned beneath the screen with their ends extended upwardly between I
US33988806A 1906-10-20 1906-10-20 Sieve. Expired - Lifetime US944549A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US33988806A US944549A (en) 1906-10-20 1906-10-20 Sieve.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33988806A US944549A (en) 1906-10-20 1906-10-20 Sieve.

Publications (1)

Publication Number Publication Date
US944549A true US944549A (en) 1909-12-28

Family

ID=3012971

Family Applications (1)

Application Number Title Priority Date Filing Date
US33988806A Expired - Lifetime US944549A (en) 1906-10-20 1906-10-20 Sieve.

Country Status (1)

Country Link
US (1) US944549A (en)

Similar Documents

Publication Publication Date Title
US799405A (en) Basket construction.
US681066A (en) Flower-pot.
US816186A (en) Fruit-gatherer.
US512404A (en) henry eviston
US882398A (en) Column for interior decoration.
US1037539A (en) Wire basket.
US302535A (en) holabird
US450112A (en) William pl snow
US821862A (en) Hay-cap retainer.
US787450A (en) Reversible section-mattress.
US36061A (en) Improvement in skeleton skirts
US580157A (en) frazier
US1408367A (en) Woven basket
US402825A (en) George b
US298793A (en) Harby b
US1257486A (en) Support for tents and canopies.
US2181718A (en) Sieve
US938730A (en) Chair-seat.
US149285A (en) Improvement in grain-baskets
US1247958A (en) Silo.
US317454A (en) William m
US23935A (en) Improvement in plant-protectors
US198696A (en) Improvement in baskets
US605675A (en) Basket
US896771A (en) Shipping-box.