US3241266A

US3241266A - Abrasive particle throwing wheel assembly

Info

Publication number: US3241266A
Application number: US294007A
Authority: US
Inventors: Jr Joseph Edward Bowling
Original assignee: Pangborn Corp
Current assignee: Kennecott Corp; Pangborn Corp
Priority date: 1963-07-10
Filing date: 1963-07-10
Publication date: 1966-03-22
Anticipated expiration: 1983-03-22
Also published as: DE1477978B2; GB1026110A; DE1477978A1; DE1477978C3

Description

J. E. BOWLING, JR 3,241,266

March 22, 1966 ABRASIVE PARTICLE THROWING WHEEL ASSEMBLY 4 Sheets-Sheet 1 Filed July 10, 1963 1 NVEN TOR Jasqphi'clwardfiowlbgfi ATTORNEYS March 22, 1966 BOWLING, JR 3,241,266

ABRASIVE PARTICLE THROWING WHEEL ASSEMBLY Filed July 10, 1963 4 Sheets-Sheet 2 INVENTOR 5/ BY 07% 3 ATTORNEYS March 22, 1966 BOWLING, JR 3,241,265

ABRASIVE PARTICLE THROWING WHEEL ASSEMBLY Filed July 10, 1963 4 Sheets-Sheet 55 Fgza 40 1 0 W W ,/40 44@ g i F II, '22: M 52 "1;; 42

F 19. 40 52 gm v M INVENTOR 1 ATTORNEYS March 22, 1966 J. E. BOWLING, JR 3,241,266

ABRASIVE PARTICLE THROWING WHEEL ASSEMBLY Filed July 10, 1963 4 Sheets-Sheet 4.

INVENTOR Josepk Edward Baa/High ATTORNEYS United States Patent 3,241,266 ABRASIVE PARTICLE THRQWIN G WHEEL 1 ASSEMBLY Joseph Edward Bowling, Jr., Waynesboro, Pa., assignor to The Pangborn Corporation, I-Iagerstown, Md., a corporation of Delaware Filed July 10, 1963, Ser. No. 294,007 13 Claims. (Cl. 519) The present invention relates to a particle throwing wheel. More particularly, the invention relates to a rotatable wheel having abrasive throwing vanes extending perpendicular to one face of the wheel and radially of the Wheel, and to attaching means for securing the vanes to the wheel.

The requirement for maintaining a 90 relationship of the throwing vanes or blades with the wheel or runner head is becoming more and more important, and as each improvement in metal, heat treating and other developments are disclosed, the mechanical correctness of the vane positioning in relation to the runner head is emphasized.

It is therefore one object of my invention to provide a new and novel runner head assembly.

Another object is to provide a new and novel throwing vane or blade, and a novel and new attaching means for securing the blades to the wheel.

Other objects and advantages will become more apparent from a study of the following description and drawings wherein:

FIG. 1 is a segmental top view of a wheel with a single and double faced vane.

FIG. 2 is a section partially exploded taken along

lines

2, 2 of FIG. 1.

FIG. 3 is a section taken along lines 3, 3 of FIG. 1.

FIG. 4 is a front view of a two face vane, looking in the direction of

lines

4, 4 of FIG. 1.

FIG. 5 is a bottom view of the two faced vane illustrated in FIG. 2.

FIGS. 6, 7 and 8 are top, side and front views of the pin used in conjunction with the double faced vane shown in FIG. 3.

FIG. 9 is a section of an embodiment of a vane assembly taken along lines 10, 10 of FIG. 1.

FIG. 10 is a front view of a single face vane looking in the direction of

lines

11, 11 of FIG. 1.

FIG. 11 is a side view of the single face vane shown in FIG. 10.

FIG. 12 is a bottom view of vane shown in FIG. 11.

FIGS. 13, 14 and 15 are plan, side and front views of the pin used with the vane shown in FIG. 11.

FIG. 16 is a section of an embodiment of a single face vane looking substantially in the same direction of lines 10, 10 of FIG. 1.

FIG. 17 is a front view of the vane of FIG. 16 looking substantially in the same direction of

lines

11, 11 of FIG. 1.

FIG. 18 is a side view of the single face vane of FIG. 16.

FIG. 19 is a bottom view of the vane shown in FIG. 18.

FIGS. 20, 21 and 22 are top, side and front views of the pin used with the vane shown in FIG. 18.

FIGS. 2330 show still another embodiment of a vane and locking pin assembly.

Referring now to the drawings, there is shown in FIGS. 1 and 2 a wheel or runner head 1 mounted upon a ro- 3,241,266 Patented Mar. 22, 1966 tatable shaft 3 (FIG. 2) which is driven by a suitable drive (not shown). A double face vane 5 is shown which can be used in both clockwise and counter-clockwise runs of the head 1. A single face blade or vane 7 is also shown which is used for a one direction run only.

A removable ring-shaped vane locking ring 9 is also shown, the periphery of which abuts the intermost ends of radial extending blade mounting channels 11 cut into one face of the wheel 1. The walls of channels 11 in crease in width as they extend into the face of the wheel. As seen better in FIG. 2, the ring 9 seats in an annular channel '13 around center stud 15 of the wheel. To mount the blades 5 or 6, the blade is introduced at the wheel periphery into the channel 11 and moved therealong until the innermost end of the blade abuts the stud 15. At this point, a wedge type locking pin 17 is inserted in the seat or hole 19 in the head 1 after which the vane 5 is moved outwardly toward the wheel periphery so that the outer end of the bottom of the vane rides over the slanted surface of the pin 17. The locking ring 9 is then replaced which forces the vane against the locking pin to form a tight fit.

As seen better in FIGS. 3 and 6-8 the pin 17 here has a tapered surface 21 and a top fiat surface 22 which extends as a ledge beyond the pin barrel to the wheel periphery with the bottom surface of the ledge resting upon the channel floor. The base of the blade at the outer edge thereof by a cut-out 23' which cut-out has a complement-ary tapered surface 21 and a flat surface 22' which tapered surface 21' abuts the pin taper 21 when the vane is in mounted position.

To provide a tight and firm fit of the vane in wheel channel 11 an elongated compression leaf spring 25 is inserted into an elongated cut-out 27 in the inner portion of the base of the vane as the vane is. inserted in the channel 11. The spring forces the blade upwardly so that the tapered sides 28 of the blade (FIG. 4) are urged against the inwardly tapered side walls 29 of channel 11 in the runner head .1.

After the blade is so positioned the locking ring 9 is then put in place and the blade is operational.

FIGS. 9-15 show, in this instance, a single faced blade 7 which when operational has its outermost end flush with the periphery of the head 1 instead of extending therebeyond as with the embodiment of FIG. 3. Here, a different type locking pin 33 is also shown. The pin is cylindrical with the upper surface being divided into a flat portion 35 and a tapering portion 37 (also see FIGS. 13-15). The blade has a complementary shaped cut-out 38 with a flat surface 35' and a tapered surface 37' (see FIG. 12). The tapered surface 37' abuts the pin taper 37 when operational.

The blade 7 is mounted and locked in place in the same manner as described with reference to FIGS. 2-5. The blade 7 has the elongated cut-out 27 which houses the spring 25 for forcing the blade inwardly against the tapered side walls 29 of the runner head as described above.

FIGS. 16-22 show still another embodiment of blade and locking pin assembly. Here a single direction blade 40 is shown.

Here the pin 42 is cylindrical in shape and has a groove or indent 44 which faces the periphery of the head 1 (see FIGS. 20-22). For removing the pin, a screw driver blade or other blade is inserted in the indent and by wedging the blade upwardly the pin 44 is removed from its seat 46.

Instead of the vane channel and the vane having complementary tapered walls and

sides

28, 29, the walls 48 of the channel (see FIG. 17) are straight as are the sides Stl of the vane 40.

The cut-out 52 at the outer end of the blade has a curved back or inner wall 54 as shown in FIG. 16, the lower inwardly curving end of which abuts against the pin 46 when operational. Here again, the compression spring urges the blade upwardly to provide a firm tight fit of the blade in head 1.

FIGS. 23-30 show another embodiment of the aforedescribed blade and locking pin assembly. As seen in FIGS. 23-27, the blade 60 is a two-faced blade wherein either face can be used for clockwise or counterclockwise rotation. At the innermost end of the blade 60, the faces of the blade taper inwardly which gives a sloping surface for the abrasive being fed thereto and thus provides a better propelling path or action of the abrasive since the forward portion of the tapered surface will contact and advance the abrasive before the innermost end thereof which will eliminate bunching of the abrasive on the blade as the abrasive is propelled outwardly along the blade face.

The lock pin 62 for the vane, the locking pin recess 64 in the wheel 1, and the locking pin recess 66 in the undersurface of the blade 60 are different than those described above. Here, the recess 64 in the wheel ll extends outwardly at an angle to the vertical such as the angle shown in FIG. 24. However, this angle may vary by a few degrees either way, and the 45 example is not to be taken as being limiting. The recess 66 in the vane or blade 60 which cooperates with the pin 62 has a complementary slanting wall which is wedged against the upper portion of the pin 62 to lock the pin in place on the wheel.

The pin 62 itself is a cylinder having a shape as shown in FIGS. 2830 of the drawing. The ends of the pin are parallel to each other and taper at an angle to the vertical axis of the pin with the ends tapering outwardly toward the wheel periphery. The vane 60 is locked in place vertically by the spring 25 arrangement described in connection with the above-described embodiments. The remaining structure is also as described in connection with the other embodiments.

Obviously many modifications and variations of the present invention are possible in the light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims the invention may be practiced otherwise than as specification described.

What is claimed is:

1. A particle throwing wheel assembly comprising a rotatable wheel, radially extending vane channels extending into one face of said wheel, the width of said channels increasing as they extend into said wheel face with the thickest portion of each channel having a floor and side walls extending upwardly from said floor, throwing vanes mounted in said channels and extending perpendicular to said wheel face, each of said vanes having a base portion disposed in a respective channel, an elongated cut-out being in each of said base portions disposed toward its channel, a compression spring resting on each floor of each channel and extending into said cut-out to urge the vane upwardly against said channel side walls, a locking pin seat in each floor of each channel near the periphery of said wheel, a locking pin in each seat and extending upwardly into its respective channel, a portion of said locking pin extending into said channel being tapered, a second cut-out in each base portion of each vane for accommodating the tapered portion of the locking pin which extends into its channel, said second cutout portion including a complementary tapered portion which reacts against said tapered portion of its respective locking pin, means at the wheel center for urging each vane outwardly against its locking pin to form a tight fit, a flat surface of said pin extending outwardly from the upper portion of the tapered surface of said pin and lying between the tapered surface of said pin and the wheel periphery, and said pin terminating at said wheel periphery and substantially filling the space between said second cut-out portion of said vane and said floor of said channel 2. The assembly of claim 1 wherein said pin has a substantial cylindrical body portion seated in said locking seat, the end of said pin remote from said locking pin seat being beveled to constitute said tapered portion of said locking pin, and a fiat portion extending from said tapered portion toward said periphery of said wheel.

3. A particle throwing vane comprising a particle throwing surface having a discharge end, a base portion for afiixing the vane in a vane carrying channel in a rotatable wheel, a cut-out portion in the base portion for receiving a compression spring when mounted on said wheel, a second cut-out portion in said base portion, said second cutout portion tapering upwardly and outwardly from said base portion toward said discharge end for accommodating a vane locking pin supported in said channel.

4. The particle throwing vane of claim 3 wherein the vane has double faced particle throwing surfaces and wherein the faces are parallel over a portion of their length and taper inwardly at the innermost end of the vane.

5. The vane of claim 3 wherein a fiat surface extends from the upper end of said tapered surface.

6. A particle throwing assembly comprising a rotatable wheel, radially extending throwing vane channels extending into one face of said wheel, the width of said channels increasing as they extend into said wheel face with the thickest portion of each channel being a floor and side walls extending upwardly from said floor, throwing vanes mounted in said channels and extending perpendicular from said wheel face, each of said vanes having a base portion disposed in a respective channel, an elongated cut-out being in each of said base portions disposed toward its channel, a compression spring resting on each floor of said channel and extending into said cut-out to urge the vane upwardly against said channel side walls, a locking pin seat in each floor of each channel near the periphery of said wheel, a locking pin in each seat and extending upwardly into its respective channel, a portion of said locking pin extending into said channel being inclined with respect to said wheel face, a second cut-out in each base portion of each vane for accommodating the portion of said locking pin which extends into its channel, said second cut-out portion including a complementary inclined portion of its respective locking pin and means at the wheel center for urging each vane outwardly against its locking pin to form a tight fit.

7. The assembly of claim 6 wherein each vane is a double faced throwing vane, the faces of said double faced vane being parallel over a portion of their length and tapering inwardly at the end of said vane adjacent the center of said wheel.

8. The assembly of claim 6 wherein said pin is substantially cylindrical with its longitudinal cross section being substantially the shape of a parallelogram, one corner of said parallelogram being flattened, and the axis of said parallelogram being inclined with respect to said wheel face.

9. The assembly of claim 6 wherein said pin is substantially cylindrical with one end being beveled, and said beveled end constituting said inclined portion of said pin.

10. The assembly of claim 6 wherein said pin has a substantially cylindrical body portion seated in said locking pin seat, an end of said pin remote from said locking seat being beveled to constitute the inclined portion,

and a flat ledge extending from said beveled end toward said periphery of said wheel.

11. A particle throwing vane locking pin comprising a substantially cylindrical body, the upper end of said body being beveled to provide a tapered surface for abutment against a throwing vane, and a flat ledge extending from said beveled end outwardly beyond the cylindrical portion of said body.

12. A particle throwing vane locking pin comprising [a substantially cylindrical body, the upper end of said body being beveled to provide a tapered surface for abutment against a throwing vane, and the remaining portion of said upper end being flat.

13. A particle throwing vane locking pin comprising a substantially cylindrical body, the longitudinal cross section of said body being substantially the shape of a parallelogram, and one end of said body being beveled.

References Cited by the Examiner UNITED STATES PATENTS Little 151-24 Marple 15124 Merwin 858.l Minich 51-9 Wasserbech 858.1 Hamren 51-9 Keefer 51-9 Rosenberger 519 McKay 85-8.1 Rosenberger et al. 519 Gossard 51-9 15 LESTER M. SWINGLE, Primary Examiner.

J. SPENCER OVERHOLSER, Examiner.

Claims

6. A PARTICLE THROWING ASSEMBLY COMPRISING A ROTATABLE WHEEL, RADIALLY EXTENDING THROWING VANE CHANNELS EXTENDING INTO ONE FACE OF SAID WHEEL, THE WIDTH OF SAID CHANNELS INCREASING AS THEY EXTEND INTO SAID WHEEL FACE WITH THE THICKEST PORTION OF EACH CHANNEL BEING A FLOOR AND SIDE WALLS EXTENDING UPWARDLY FROM SAID FLOOR, THROWING VANES MOUNTED IN SAID CHANNELS AND EXTENDING PERPENDICULAR FROM SAID WHEEL FACE, EACH OF SAID VANES HAVING A BASE PORTION DISPOSED IN A RESPECTIVE CHANNEL, AN ELONGATED CUT-OUT BEING IN EACH OF SAID BASE PORTIONS DISPOSED TOWARD ITS CHANNEL, A COMPRESSION SPRING RESTING ON EACH FLOOR OF SAID CHANNEL AND EXTENDING INTO SAID CUT-CUT TO URGE THE VANE UPWARDLY AGAINST SAID CHANNEL SIDE WALLS, A LOCKING PIN SEAT IN EACH FLOOR OF EACH CHANNEL NEAR THE PERIPHERY OF SAID WHEEL, A LOCKING PIN IN EACH SEAT AND EXTENDING UPWARDLY INTO ITS RESPECTIVE CHANNEL, A PORTION OF SAID LOCKING PIN EXTENDING INTO SAID CHANNEL BEING INCLINED WITH RESPECT TO SAID WHEEL FACE, A SECOND CUT-OUT IN EACH BASE PORTION OF EACH VANE FOR ACCOMMODATING THE PORTION OF SAID LOCKING PIN WHICH EXTENDS INTO ITS CHANNEL, SAID SECOND CUT-OUT PORTION INCLUDING A COMPLEMENTARY INCLINED PORTION OF ITS RESPECTIVE LOCKING PIN, AND MEANS AT THE WHEEL CENTER FOR URGING EACH VANE OUTWARDLY AGAINST ITS LOCKING PIN TO FORM A TIGHT FIT.