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Manufacturers Index - Churchill Machine Tool Co., Ltd.

Churchill Machine Tool Co., Ltd.
Manchester, England: Pendleton, England: Altrincham, England, Coventry, England, U.K.
Manufacturer Class: Metal Working Machinery

Patents
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Patent Number Date Title Name City Description
191,211,124 Aug. 29, 1912 Improvements in Grinding Machines Sydney Herbert March , England Abstract:

In a circular grinding machine of the type in which the work v is carried on a reciprocating table w past the rotating grinding-wheel d, and the machine is driven by a self-contained motor k, all the shafts and gearing for driving the work are mounted on the outside of the machine so as to be readily accessible. The gearing for driving the work comprises a belt drive from the motor to a spur-wheel n, which gears with a wheel o mounted on a shaft p. supported in a bearing a<1> upon the machine frame, and in bearings in the work table. Upon one end of the shaft p is a mitre-wheel p<1> gearing with a mitre-wheel q<1> on the lower end of a vertical shaft q, upon the upper end of which is a mitre-wheel q<2> gearing with a mitre-wheel r<1> on a rotary swing arm r, which may be moved forward with the adjustable headstock b as required. At the other end of the swing arm is a mitre-wheel r<2> geared by a train of wheels to the rotating face-plate.
    Improvements in Grinding Machines Harry Hales Asbridge , England  
191,317,068 Nov. 20, 1913 Improvements in grinding machines Sydney Herbert March , England
    Improvements in grinding machines Harry Hales Asbridge , England  
191,317,535 Nov. 20, 1913 Improvements in Grinding Machines Sydney Herbert March , England
    Improvements in Grinding Machines Harry Hales Asbridge , England  
191,322,196 Nov. 27, 1913 An Improvement in Grinding Machines Sydney Herbert March , England
    An Improvement in Grinding Machines Harry Hales Asbridge , England  
191,323,907 Dec. 04, 1913 Improvements in Internal Grinding Machines Sydney Herbert March , England
    Improvements in Internal Grinding Machines Harry Hales Asbridge , England  
191,326,559 Jan. 22, 1914 Improvements in Grinding Machines. Sydney Herbert March , England
    Improvements in Grinding Machines. Harry Hales Asbridge , England  
191,501,172 Jul. 08, 1915 Improvements in Internal Grinding Machines and Like Machines. Sydney Herbert March , England
    Improvements in Internal Grinding Machines and Like Machines. Harry Hales Asbridge , England  
111,275 Nov. 22, 1917 Improvements in Bearings for the Shafts and Spindles of Grinding Machines and Other Machine Tools and Machines Sydney Herbert March , England
    Improvements in Bearings for the Shafts and Spindles of Grinding Machines and Other Machine Tools and Machines Harry Hales Asbridge , England  
122,804 Feb. 06, 1919 Improvements in Grinding Machines. Sydney Herbert March , England
    Improvements in Grinding Machines. Harry Hales Asbridge , England  
229,943 Mar. 05, 1925 Improvements in Cam Grinding and Milling Machines Harry Hales Asbridge , England
236,365 Jul. 09, 1925 Improvements Relating to Circular Grinding Machines Harry Hales Asbridge , England
238,703 Aug. 27, 1925 Improvements Relating to Gear Grinding Machines Harry Hales Asbridge , England
239,778 Sep. 17, 1925 Improvements Relating to Roll Grinding Machines Harry Hales Asbridge , England Abstract:

A cambered surface on a roll c is produced by tilting a grinding-wheel y by means of an inclined straight-edged bar and link motion about a shaft e as the wheel is fed axially. The grinding-wheel is mounted on a head x slidable in a base d pivoted on the shaft e to a slide b traversing a bed a. On the slide b are mounted cheek plates m carrying levers j, k connected by a lever i adjustably carrying at its lower end a bowl h contacting with the underside of an adjustable straight-edged inclined bar f mounted on the bed a. The lever i has a vertically grooved extension p straddling a roller g on an arm r pivoted to the cheek plates. The arm carries adjustable stops t, u coacting with the base d. An extension v of the lever indicates the position of the slide b. For parallel grinding both stops are withdrawn, and for concave and convex grinding respectively the stops a and t are set to contact with the bed d when the slide b is in mid-position. Movement of the slide to either side of the mid-position causes an arcuate movement of the extension p and the stop carrying arm r.
602,611 Mar. 23, 1926 Perfectionnements aux machines à meuler ou fraiser les cames Harry Hales Asbridge , England
431,052 Jun. 28, 1926 Maschine zum Schleifen oder Fraesen der Steuerdaumen oder Knaggen an Steuerwellen Harry Hales Asbridge , England
262,685 Dec. 16, 1926 Improvements Relating to Axle Turning and Grinding Machines Harry Hales Asbridge , England
265,493 Feb. 10, 1927 Improvements in Work Driving Mechanism of Cylindrical Grinding Machines Harry Hales Asbridge , England
266,246 Feb. 24, 1927 Improvements in Machines for Grinding Cylindrical Surfaces Harry Hales Asbridge , England
270,994 May. 19, 1927 Improvements Relating to Surface Grinding Machines Harry Hales Asbridge , England
623,616 Jun. 28, 1927 Machine à meuler les dents d'engrenages Harry Hales Asbridge , England
624,109 Jul. 08, 1927 Mécanisme de commande de la pièce en travail dans les machines à meuler Harry Hales Asbridge , England
624,110 Jul. 08, 1927 Machine à meuler Harry Hales Asbridge , England
281,840 Dec. 15, 1927 Improvements Relating to Machines for Grinding Gear Wheel Teeth Harry Hales Asbridge , England
286,570 Mar. 08, 1928 Improvements Relating to the Grinding of Gear Wheel Teeth Harry Hales Asbridge , England
1,666,955 Apr. 24, 1928 Grinding of Gear-Wheel Teeth Harry Hales Asbridge , England
298,035 Oct. 04, 1928 Improvements Relating to Machines for Grinding Rolls Harry Hales Asbridge , England
299,252 Oct. 25, 1928 Improvements in Grinding or Abrading Machines Harry Hales Asbridge , England
1,689,274 Oct. 30, 1928 Grinding of Gear-Wheel Teeth Harry Hales Asbridge , England
645,982 Nov. 06, 1928 Perfectionnements au moulage des dents de roues d'engrenage Harry Hales Asbridge , England
672,088 Dec. 23, 1929 Machine à meuler Harry Hales Asbridge , England
488,642 Jan. 02, 1930 Zahnradschleifmaschine, bei der das Abwaelzen der Zahnflanken in bezug auf die Oberflaeche einer Schleifscheibe mit Hilfe einer an einem festen Anschlag sich abwaelzendenschablonenscheibe erfolgt Harry Hales Asbridge , England
323,441 Jan. 02, 1930 Improvements Relating to Turning and Grinding or Abrading Machines Harry Hales Asbridge , England
488,733 Jan. 10, 1930 Vorrichtung zum Schleifen einer oder mehrerer Flaechen an den Achslagerfuehrungen von Lokomotivrahmen Harry Hales Asbridge , England
489,519 Jan. 21, 1930 Zahnradschleifmaschine, bei der die Form der Zahnflanken durch eine Leitkurve erzeugt wird Harry Hales Asbridge , England
1,754,139 Apr. 08, 1930 Grinding Machinery Harry Hales Asbridge , England
1,754,140 Apr. 08, 1930 Grinding or Abrading Machine Harry Hales Asbridge , England
327,930 Apr. 17, 1930 Improvements relating to machines for retruing railway carriage axle journals Harry Hales Asbridge , England
334,787 Sep. 11, 1930 Improvements in cam and like grinding and milling machines Llywelyn Mawer , England
342,922 Feb. 12, 1931 Improvements in machines for grinding spline shafts Harry Hales Asbridge , England
1,794,271 Feb. 24, 1931 Grinding machine Harry Hales Asbridge , England
343,718 Feb. 26, 1931 Improvements relating to hydraulically operated machine tools Harry Hales Asbridge , England
344,664 Mar. 12, 1931 Improvements relating to the slideways of grinding machines and other machine tools Harry Hales Asbridge , England
360,346 Nov. 05, 1931 Improvements in spindle bearings Harry Hales Asbridge , England
360,964 Nov. 16, 1931 Improvements in centreless grinding machines Harry Hales Asbridge , England
363,023 Dec. 17, 1931 Improvements in grinding or abrading machines Harry Hales Asbridge , England
366,466 Feb. 02, 1932 Improvements in grinding or abrading machines Harry Hales Asbridge , England
366,467 Feb. 02, 1932 Improvements relating to grinding or abrading machines Harry Hales Asbridge , England
366,468 Feb. 02, 1932 Improvements in grinding or abrading machines Harry Hales Asbridge , England
722,591 Mar. 22, 1932 Machine à meuler sans pointes Harry Hales Asbridge , England
373,056 May. 19, 1932 Improvements relating to cylindrical grinding or abrading machines Harry Hales Asbridge , England
373,736 Jun. 02, 1932 Improvements in machines for grinding splineshafts Harry Hales Asbridge , England
553,053 Jun. 24, 1932 In der Planscheibe von Drehbaenken und Schleifmaschinen zur Bearbeitung von Lokomotivradsaetzen eingebaute Auswuchtvorrichtung Harry Hales Asbridge , England
558,212 Sep. 02, 1932 Maschine zum Schleifen und Fraesen von Nocken u. dgl. Llywelyn Mawer , England
383,724 Nov. 24, 1932 Improvements relating to precision grinding or abrading machines Harry Hales Asbridge , England
385,878 Jan. 05, 1933 Improvements in locomotive crank pin grinding and quartering machines Harry Hales Asbridge , England
1,894,382 Jan. 17, 1933 Cam and like grinding machine Llywelyn Mawer , England
387,263 Feb. 02, 1933 Improvements relating to ball and roller bearings Harry Hales Asbridge , England
570,200 Feb. 13, 1933 Gleitbahnschutz fuer Werkzeugmaschinen Harry Hales Asbridge , England
389,032 Mar. 09, 1933 Improvements relating to hydraulic operating means for grinding or abrading machines Harry Hales Asbridge , England
572,633 Mar. 18, 1933 Improvements in grinding or abrading machines Harry Hales Asbridge , England
333,589 Jun. 27, 1933 Splineshaft Grinding Machine Harry Hales Asbridge , England
333,749 Jul. 04, 1933 Grinding or Abrading Machine Harry Hales Asbridge , England
333,750 Jul. 04, 1933 Grinding or Abrading Machine Harry Hales Asbridge , England
750,253 Aug. 08, 1933 Machine à meuler et à polir Harry Hales Asbridge , England
396,478 Aug. 10, 1933 Improvements in grinding or abrading machines Harry Hales Asbridge , England
1,928,162 Sep. 26, 1933 Precision grinding or abrading machine Harry Hales Asbridge , England
1,949,345 Feb. 27, 1934 Grinding or abrading machine Harry Hales Asbridge , England
339,661 Feb. 27, 1934 Precision Grinding Machine Harry Hales Asbridge , England
410,961 May. 31, 1934 Improvements relating to spindle bearings Harry Hales Asbridge , England
411,595 Jun. 14, 1934 Improvements in hydraulic traversing mechanism for use in machine tools and the like Harry Hales Asbridge , England
601,484 Aug. 22, 1934 Vorschubeinrichtung an Praezisionsschleifmaschinen Harry Hales Asbridge , England
415,879 Sep. 06, 1934 Improvements relating to internal grinding machines Harry Hales Asbridge , England
416,271 Sep. 13, 1934 Improvements relating to centreless grinding machines Harold Longthorpe , England
345,665 Oct. 30, 1934 Spindle Bearing Harry Hales Asbridge , England
424,261 Feb. 19, 1935 Improvements in internal grinding machines Harry Hales Asbridge , England
425,015 Mar. 05, 1935 Improvements relating to spindle bearings Harry Hales Asbridge , England
612,467 Apr. 25, 1935 Schleif- und Schmirgelmaschine zum Schleifen von Kegelflaechen pilzfoermiger Ventile oder Schnueffelventile Harry Hales Asbridge , England
782,386 Jun. 04, 1935 Machine de meulage interne Harry Hales Asbridge , England
2,005,331 Jun. 18, 1935 Internal grinding machine Harry Hales Asbridge , England
2,005,332 Jun. 18, 1935 Internal grinding machine Harry Hales Asbridge , England
431,426 Jul. 08, 1935 Improvements relating to locomotive crank pin quartering machines Harry Hales Asbridge , England
616,643 Aug. 08, 1935 Spitzenlose Schleifmaschine Harry Hales Asbridge , England
353,203 Sep. 24, 1935 Internal Grinding Machine Harry Hales Asbridge , England
2,023,720 Dec. 10, 1935 Centerless grinding machine Harry Hales Asbridge , England
2,028,487 Jan. 21, 1936 Spindle bearing Harry Hales Asbridge , England
629,188 May. 07, 1936 Hydraulisch belastetes Lager, insbesondere fuer Werkzeugmaschinen Harry Hales Asbridge , England
357,933 May. 19, 1936 Spindle Bearing Harry Hales Asbridge , England
46,439 Jun. 03, 1936 Palier d'arbre Harry Hales Asbridge , England
630,625 Jun. 03, 1936 Spindellager Harry Hales Asbridge , England
449,415 Jun. 26, 1936 Improvements relating to cylindrical grinding machines Harry Hales Asbridge , England
450,300 Jul. 14, 1936 Improvements relating to machines for grinding crankshafts and the like John Cyril Jones , England
2,053,389 Sep. 08, 1936 Spindle Bearing Harry Hales Asbridge , England
464,256 Apr. 14, 1937 Improvements relating to spindle bearings Harry Hales Asbridge , England
465,210 May. 04, 1937 Improvements relating to precision grinding machines Harry Hales Asbridge , England
813,093 May. 25, 1937 Machine à meuler de précision Harry Hales Asbridge , England
650,715 Sep. 30, 1937 Einrichtung zum Erzeugen von schnellen Zonenverschiebungsschwingungen kleiner Weglaenge bei Innenschleifmaschinen Harry Hales Asbridge , England
2,101,383 Dec. 07, 1937 Precision grinding machine Harry Hales Asbridge , England
476,363 Dec. 07, 1937 Improvements relating to roll grinding machines Harry Hales Asbridge , England
485,323 May. 18, 1938 Improvements relating to precision grinding machines John Cyril Jones , England
489,519 Jul. 28, 1938 Improvements relating to grinding wheel truing devices for grinding or abrading machines Harry Hales Asbridge , England
490,776 Aug. 22, 1938 Improvements relating to grinding or abrading machines Harry Hales Asbridge , England
491,666 Sep. 07, 1938 Improvements relating to internal grinding machines Harry Hales Asbridge , England
2,130,711 Sep. 20, 1938 Grinding wheel truing device Harry Hales Asbridge , England
835,443 Dec. 21, 1938 Appareil À Rectifier Les Meules Pour Machines À Meuler Ou Affûter Harry Hales Asbridge , England
2,144,043 Jan. 17, 1939 Internal grinding machine Harry Hales Asbridge , England
501,911 Mar. 07, 1939 Improvements in variable speed drives in precision grinding machines Harry Hales Asbridge , England
510,144 Jul. 27, 1939 Improvements relating to locking nuts Harry Hales Asbridge , England
513,405 Oct. 11, 1939 Improvements in precision grinding machines Harry Hales Asbridge , England
515,554 Dec. 07, 1939 Improvements in grinding or abrading machines Harry Hales Asbridge , England
522,753 Jun. 26, 1940 Improvements relating to spindle bearings Harry Hales Asbridge , England
391,084 Sep. 03, 1940 Spindle Bearing Harry Hales Asbridge , England
857,656 Sep. 24, 1940 Palier d'arbre Harry Hales Asbridge , England
529,137 Nov. 14, 1940 Improvements relating to roll grinding machines Harry Hales Asbridge , England
2,225,761 Dec. 24, 1940 Spindle bearing Harry Hales Asbridge , England
532,053 Jan. 16, 1941 Improvements relating to the grinding of screw threads Harry Hales Asbridge , England
535,503 Apr. 10, 1941 Improvements relating to work gauging instruments for precision grinding machines Harry Hales Asbridge , England
539,350 Sep. 05, 1941 Improvements relating to spindle bearings Harry Hales Asbridge , England
540,412 Oct. 16, 1941 Improvements relating to the lubrication of bearings Harry Hales Asbridge , England
542,918 Feb. 02, 1942 Improvements relating to the forming of grinding wheels for grinding vee grooves therein Harry Hales Asbridge , England
403,062 Feb. 24, 1942 Precision Grinding Machine Harry Hales Asbridge , England
544,395 Apr. 10, 1942 Improvements relating to bolt or tee slots of machine tools and like machines Harry Hales Asbridge , England
2,281,817 May. 05, 1942 Work gauging instrument for precision grinding machines Harry Hales Asbridge , England
549,137 Nov. 06, 1942 Improvements relating to precision grinding machines Harry Hales Asbridge , England
409,190 Dec. 08, 1942 Bearing Lubricating Device Harry Hales Asbridge , England
409,191 Dec. 08, 1942 Spindle Bearing Harry Hales Asbridge , England
549,918 Dec. 14, 1942 Improvements relating to tanks for the circulating cooling lubricant of precision grinding and like machines Harry Hales Asbridge , England
411,259 Mar. 23, 1943 Work Gauging Instrument for Precision Grinding Machines Harry Hales Asbridge , England
552,625 Apr. 16, 1943 Improvements relating to the internal grinding of screw threads Harry Hales Asbridge , England
553,694 Jun. 01, 1943 Improvements in precision grinding machines Harry Hales Asbridge , England
882,736 Jun. 11, 1943 Palier d'arbre Harry Hales Asbridge , England
2,324,664 Jul. 20, 1943 Spindle bearing Harry Hales Asbridge , England
417,383 Dec. 28, 1943 Settling Tank for Machine Tool Cooling Lubricant Harry Hales Asbridge , England
559,604 Feb. 25, 1944 Improvements in centreless grinding or abrading machines Harold Longthorpe , England
559,610 Feb. 25, 1944 Improvements in roll grinding machines Reginald James Mclaren Whibley , England
562,362 Jun. 28, 1944 Improvements in centreless grinding or abrading machines Harold Longthorpe , England
572,097 Sep. 21, 1945 Improvements in apparatus for forming grinding wheel surfaces Harry Hales Asbridge , England
572,098 Sep. 21, 1945 Improvements in centreless grinding machines Harold Longthorpe , England
576,298 Mar. 27, 1946 Improvements relating to precision grinding machines Harold Longthorpe , England
433,914 Apr. 02, 1946 Centreless Grinding or Abrading Machine Harold Longthorpe , England
604,950 Jul. 13, 1948 Improvements relating to centreless grinding machines Harold Longthorpe , England
618,201 Feb. 17, 1949 Improved truing device for the grinding wheels of precision grinding machines George Herbert Asbridge , England
619,472 Mar. 09, 1949 Improvements in the construction of internal-grinding spindles George Herbert Asbridge , England
623,277 May. 16, 1949 Improvements in centreless grinding machines Harold Longthorpe , England
623,680 May. 20, 1949 Improvements relating to the control of electrically driven cross feed mechanism of plano-grinders, plano-millers and planing machines John Cyril Jones , England
623,848 May. 24, 1949 Improvements relating to electric motor control systems for electro-mechanical clamping means for workpieces in machine tools John Cyril Jones , England
624,501 Jun. 09, 1949 Improvements relating to work holding means for machines for grinding crankshafts George Herbert Asbridge , England
626,176 Jul. 11, 1949 Improvements in precision grinding machines George Herbert Asbridge , England
2,526,796 Oct. 24, 1950 Precision grinding machine George Herbert Asbridge , England
650,069 Feb. 14, 1951 Improvements relating to grinding machines John Cyril Jones , England
694,258 Jul. 15, 1953 Improvements relating to grinding machines John Cyril Jones , England
695,973 Aug. 19, 1953 Improvements relating to the lubrication of the bearings of grinding machine spindles George Herbert Asbridge , England
696,140 Aug. 26, 1953 Improvements relating to shaft bearings George Herbert Asbridge , England
702,584 Jan. 20, 1954 Improvements relating to the lubrication of sliding surfaces of machine tools George Herbert Asbridge , England
713,485 Aug. 11, 1954 Improvements in reversing mechanisms for the tables of machine tools George Herbert Asbridge , England
727,752 Apr. 06, 1955 Improvements relating to hydraulically operated machine tools George Herbert Asbridge , England
966,647 Aug. 29, 1957 Beistellvorrichtung fuer Schleifmaschinen John Cyril Jones , England
563,462 Sep. 16, 1958 Feeding Means for Grinding Machines John Cyril Jones , England
1,269,648 Aug. 18, 1961 Perfectionnement aux Rectifieuses Churchill Machine Tool Co., Ltd. , England
1,279,755 Dec. 22, 1961 Machine à Rectifier Churchill Machine Tool Co., Ltd. , England
1,295,834 Jun. 08, 1962 Rectifieuse Churchill Machine Tool Co., Ltd. , England
903,337 Aug. 15, 1962 Improvements relating to grinding machines John Cyril Jones , England
906,969 Sep. 26, 1962 Improvements relating to grinding machines George Bishop , England
1,308,887 Nov. 09, 1962 Perfectionnements Relatifs aux Dispositifs de Calibrage Pour Machine-Outil Churchill Machine Tool Co., Ltd. , England
911,982 Dec. 05, 1962 Improvements relating to automatically controlled grinding machines John Cyril Jones , England
1,314,746 Jan. 11, 1963 Dispositif Perfectionné De Chargement et de Déchargement Pour Machine-Outil Churchill Machine Tool Co., Ltd. , England
922,066 Mar. 27, 1963 Improvements relating to gauge units for machine tools George Bishop , England
661,106 Apr. 09, 1963 Grinding Machines John Cyril Jones , England
676,815 Dec. 24, 1963 Gauge Units for Machine Tools George Bishop , England
3,186,096 Jun. 01, 1965 Gauge units for machine tools George Bishop , England
1,202,388 Oct. 07, 1965 Elektrische Steuerung fuer eine Schleifmaschine John Cyril Jones , England
1,021,822 Mar. 09, 1966 Improvements in or relating to centreless grinding machines John Cyril Jones , England
1,142,939 Feb. 12, 1969 Improvements in steadies for grinding machines Robert James Welsh , England
1,155,962 Jun. 25, 1969 Improvements in or relating to grinding machines John Cyril Jones , England
1,155,963 Jun. 25, 1969 Improvements in or relating to grinding machines John Cyril Jones , England Abstract:

A grinding machine of the type in which a predetermined fall in the grinding wheel motor current produces an infeed of the grinding wheel relative to a workpiece until such reduced current is increased and restored to a predetermined value includes circuit means adapted to control the longitudinal traverse of the grinding wheel relative to the workpiece in response to such an increase in current. Thus, with a workpiece such as a roll has been worn in the middle there is a gradual fall in the grinding wheel motor current as the wheel traverses from the end of the roll to the middle of lesser diameter; when the current has fallen a predetermined amount the control circuit operates causing the wheel to move further in towards the workpiece thus producing an increase in the load current. This increase in current is utilized to stop the longitudinal traverse of the wheel, and then to reverse the direction of traverse. The full sequence of operations required to control the traverse of the wheel first to grind the tailstock portion of the roll and then the workhead portion, whilst maintaining the load on the grinding wheel substantially constant, is described in the Specification with reference to Figs. 1 to 4 of the drawings (not shown) which depict a suitable relay circuit for effecting the desired control.
    Improvements in or relating to grinding machines John Derick Barclay , England  
1,155,964 Jun. 25, 1969 Improvements in or Relating to Grinding Machines John Cyril Jones , England Abstract:

A roll grinding machine includes a control circuit having a first selector switch adapted to cause a predetermined degree of grinding selected from a plurality of predetermined degrees of grinding and a second selector switch adapted to cause grinding to a further predetermined degree additional to the said predetermined degree the arrangement being provided so that when workpieces such as a pair of rolls are reconditioned by the machine the first roll can be matched with the second roll which requires to have a predetermined diameter relationship with the first. Thus, in operation and with No 1 roll in position, the first selector switch is set to " No. 1 "; a preset number of rough grinding strokes determined by a first counter are then effected, followed by semi-finish and finish grinding stages. For the second roll, the first switch is moved to " No. 2" position and a rough grinding is effected for a smaller number of strokes, determined by a second counter, than for the first roll. The second roll is then measured to establish how much more material remains to be removed to bring the roll diameter to within the required dimensional tolerance relative the first roll, and the second selector switch is adjusted accordingly; the necessary additional rough grinding strokes, semi-finish strokes and finish strokes are then effected automatically. A suitable switching circuit is described in the Specification with reference to Figs. 1 to 4 (not shown).
    Improvements in or Relating to Grinding Machines John Derick Barclay , England  
3,456,394 Jul. 22, 1969 Grinding machines Robert J. Welsh , England
1,161,477 Aug. 13, 1969 Improvements in mechanical handling devices Robert James Welsh , England
1,174,125 Dec. 10, 1969 Improvements in or relating to means for truing grinding wheels John Cyril Jones , England
1,181,156 Feb. 11, 1970 Improvements in grinding machines Robert James Welsh , England
1,183,370 Mar. 04, 1970 Improvements in grinding machines Robert James Welsh , England
838,788 Apr. 07, 1970 Motor Control System for Grinding Machines John Cyril Jones , England
    Motor Control System for Grinding Machines John Derick Barclay , England  
840,686 May. 05, 1970 Grinding Machines Edward D. Brennan , England
    Grinding Machines John Cyril Jones , England  
868,716 Apr. 20, 1971 Means for Truing Grinding Wheels John Cyril Jones , England
875,208 Jul. 06, 1971 Grinding Machines John Cyril Jones , England
    Grinding Machines John Derick Barclay , England  
1,752,850 Aug. 12, 1971 Bockkranbeschickungsvorrichtung Robert James Welsh , England
3,660,944 May. 09, 1972 Grinding Machines John Noel Tittle , England
    Grinding Machines Brian Rogers Bottomley , England  
    Grinding Machines Eric Warburton , England  
915,294 Nov. 21, 1972 Grinding Machines John Cyril Jones , England
3,751,860 Aug. 14, 1973 Method of Grinding Rolls John Noel Tittle , England